单选题Variations in the color of sea water from blue to green seem to be caused by high or low concentrations of salt.A Changes B Descriptions C Measures D Clarity

题目
单选题
Variations in the color of sea water from blue to green seem to be caused by high or low concentrations of salt.
A

Changes      

B

Descriptions    

C

Measures

D

Clarity


相似考题
更多“Variations in the color of sea water from blue to green seem”相关问题
  • 第1题:

    以下选项中不能正确把cl定义成结构体变量的是

    A.typedef struct { int red; int green; int blue; } COLOR; COLOR cl;

    B.struct color cl { int red; int green; int blue; }

    C.struct color { int red; int green; int blue; } cl;

    D.struct { int red; int green; int blue; } cl;


    正确答案:B
    解析:选项A)是把结构体类型改名后定义为变量cl。选项C),D)则是在定义结构体类型时定义变量,而选项B)不符合结构体类型定义的语法规则。

  • 第2题:

    Which of the following is the correct pin out for T568B?()

    A. Orange/white, orange, green/white, blue, blue/white, green, brown/white, brown

    B. Blue, blue/white, orange/white, orange, brown/white, brown, green/white, green

    C. Green/white, green, orange/white, blue, blue/white, orange, brown/white, brown

    D. Orange/white, orange, brown/white, brown, green/white, green, blue, blue/white


    参考答案:A

  • 第3题:

    以下选项中能正确把c1定义成结构体变量的是( )。

    A.typedef struct { int red; int red; int green; int blue; }COLOR; COLOR c1;

    B.struct color c1 { int red int red; int green int blue; };

    C.stmctcolor { int red, int green; int blue; }c1;

    D.struct { int red; int green; int blue; }c1;


    正确答案:D
    解析:因为结构体中不能出现同名的成员变量,所以选项A和B都是错误的;又因为结构体中成员的定义应该由分号隔开,所以选项C也是错误的。选项D定义了一个无名结构体,并同时定义该结构体变量c1,是正确的写法。故应该选择D。

  • 第4题:

    阅读下列说明和 C++代码,填补代码中的空缺,将解答填入答题纸的对应栏内。 【说明】 设计 RGB 方式表示颜色的调色板,进行绘图,其类图如图 5-1 所示。该程序的 C++代码附后。图5-1 类图

    【C++代码】 include <iostream> include <stdlib.h> include <ctime> using namespace std; class MyColor{ private: int red; int green; int blue; public: MyColor() {red = 0; green = 0; blue = 0; } ~MyColor() { } MyColor(int red ,int green ,int blue) { this->red = red; this->green = green; this->blue = blue;} //其他方法略 void print() { cout<<"Red: " << red << "\tGreen: " << green << "\tBlue " << blue << endl; } }; class Palette ( private: int number; MyColor** palette; public: Palette() { number = 256; palette = (MyColor*)malloc (sizeof(MyColor ) *number); } ~Palette () { for (int i = 0; i < number; i++) { delete palette[i]; } (1) ; } Palette(MyColor** pale ,int number) { (2) = number; palette = (MyColor**)malloc(sizeof(MyColor*)*number) ; memcpy(palette ,pale ,sizeof(pale)*number); } //其他方法略 void print () { for (int i = 0; i < number; i++) { cout << i << " : " ; palette[i]->print(); } } }; class Drawing{ public: (3) int COLORNUMBER = 16; public: ~Drawing () { } void draw() ( Palette* palette; int red ,green ,blue; MyColor* color[COLORNUMBER); srand((unsigned)time(O)); for (int i = 0; i < COLORNUMBER; i++) red=rand ()% 256; green = rand() % 256; blue = rand ()% 256; color [i) = (4) (red ,green ,blue); } palette = new Palette(color ,COLORNUMBER); palette->print(); for (int i = 0; i < COLORNUMBER; i++) delete color[i]; } }; int main () { Drawing * d = (5) ; d->draw(); delete d; }


    正确答案:(1) free(palette)
    (2) this->number
    (3) static const
    (4) new MyColor
    (5) new Drawing()

  • 第5题:

    The traffic lights were red when the driver reached them.To the surprise of his passenger,the ear did not slow down.Unexpectedly the passenger was thrown forward in the vehicle as the driver put on his brakes at the last moment.The car stopped just in time.
    "Sorry,I didn't notice the light.I thought it was green until I saw that it was the top light which was shining."
    This strange story is quite true.About ten men in every hundred are color blind in some way;women are luckier--only about one in two hundred suffers from color blindness.
    In some cases,a man may not be able to see deep red.He may think that red,orange and yellow are all the same as green.
    People often like one color more than others.Blue is the color of the sky and sea.Green makes us think of fields and trees.Red is the color of blood and makes some people think of danger.Black is the color of night.In the dark we cannot see what is around us so we are sometimes afraid of the unknown and do not like black as a color.

    One is considered as a color blind man if__.

    A.he can see the difference between red and deep red
    B.he can see the difference between blue and green
    C.he can't tell the difference between orange and green
    D.he thinks green is the same as blue

    答案:C
    解析:
    参见第四段。

  • 第6题:

    The traffic lights were red when the driver reached them.To the surprise of his passenger,the ear did not slow down.Unexpectedly the passenger was thrown forward in the vehicle as the driver put on his brakes at the last moment.The car stopped just in time.
    "Sorry,I didn't notice the light.I thought it was green until I saw that it was the top light which was shining."
    This strange story is quite true.About ten men in every hundred are color blind in some way;women are luckier--only about one in two hundred suffers from color blindness.
    In some cases,a man may not be able to see deep red.He may think that red,orange and yellow are all the same as green.
    People often like one color more than others.Blue is the color of the sky and sea.Green makes us think of fields and trees.Red is the color of blood and makes some people think of danger.Black is the color of night.In the dark we cannot see what is around us so we are sometimes afraid of the unknown and do not like black as a color.

    According to the passage,which of the following statements is true?

    A.Black stands for unhappines
    B.Black makes people think of nigh
    C.Black makes people think of sorro
    D.Black is the color of the mournin

    答案:B
    解析:
    参见文章最后一个句子。

  • 第7题:

    共用题干
    第三篇

    Ways to Create Colors in a Photograph

    There are two ways to create colors in a photograph.One method called additive,starts with three basic colors and adds them together to produce some other color. The second method,called subtractive,starts with white light(a mixture of all colors in the spectrum)and,by taking away some or all other colors,leaves the one desired.
    In the additive method,separate colored lights combine to produce various other colors.The three additive primary colors are green,red and blue(each providing about one-third of the wavelengths in the total spectrum).Mixed in varying proportions,they can produce all colors.Green and red light mix to produce yellow,red and blue light mix to produce magenta(a purplish pink);green and blue mix to produce cyan(a bluish green).When equal parts of all three of these primary-colored beams of light overlap(重叠),the mixture appears white to the eye.
    In the subtractive process colors are produced when dye(染料)absorbs some wavelengths and so passes on only part of the spectrum.The subtractive primaries are cyan,magenta and yellow; these primaries or dyes absorb red,green and blue wavelengths respectively,thus subtracting them from white light. These dye colors are the complementary colors to the three additive primaries of red,green and blue.Properly combined,the subtractive primaries can absorb all colors of light, producing black.But,mixed in varying proportions,they too can produce any color in the spectrum.
    Whether a particular color is obtained by adding colored lights together or by subtracting some light from the total spectrum,the result looks the same to the eye.The additive process was employed for early color photography. But the subtractive method,while requiring complex chemical techniques,has turned out to be more practical and is the basis of all modern color films.

    Which of the following is NOT a pair of additive and subtractive primary colors?
    A:Yellow and blue.
    B: Magenta and green.
    C:Black and white.
    D:Cyan and red.

    答案:C
    解析:
    这是一道理解主旨的题。第一段第一句明确提出,照片中的颜色是通过加色法和减色法两种方式形成的。之后二、三段分别详细介绍了两种方式的具体情况。A、B、D选项均不是文章主旨。
    第二段最后一句话提到当等比例的三原色重叠时,形成白色。因此B选项是正确的。
    这是一道关于减色法过程的细节题。根据第三段第二句话可知,减色法中的三原色分别是蓝绿色、紫红色、黄色;它们分别从白色中吸取红色、绿色、蓝色的光波。故可得出蓝绿色吸收的是红色的光波。
    根据文章内容可知,加色法的三原色分别为红、绿、蓝,减色法的三原色分别是蓝绿色、紫红色、黄色。没有黑色和白色。
    根据最后一段可知,通过加色法和减色法所获的特定颜色用肉眼来看效果是一样的。加色法用于早期彩色照片的处理,而减色法虽然需要复杂的化学工艺,却被证实是更为实用的方法,所以它成为了现代彩色胶片的基础。由此可知相对于加色法,减色法更为有效。

  • 第8题:

    共用题干
    第三篇

    Ways to Create Colors in a Photograph

    There are two ways to create colors in a photograph.One method called additive,starts with three basic colors and adds them together to produce some other color. The second method,called subtractive,starts with white light(a mixture of all colors in the spectrum)and,by taking away some or all other colors,leaves the one desired.
    In the additive method,separate colored lights combine to produce various other colors.The three additive primary colors are green,red and blue(each providing about one-third of the wavelengths in the total spectrum).Mixed in varying proportions,they can produce all colors.Green and red light mix to produce yellow,red and blue light mix to produce magenta(a purplish pink);green and blue mix to produce cyan(a bluish green).When equal parts of all three of these primary-colored beams of light overlap(重叠),the mixture appears white to the eye.
    In the subtractive process colors are produced when dye(染料)absorbs some wavelengths and so passes on only part of the spectrum.The subtractive primaries are cyan,magenta and yellow; these primaries or dyes absorb red,green and blue wavelengths respectively,thus subtracting them from white light. These dye colors are the complementary colors to the three additive primaries of red,green and blue.Properly combined,the subtractive primaries can absorb all colors of light, producing black.But,mixed in varying proportions,they too can produce any color in the spectrum.
    Whether a particular color is obtained by adding colored lights together or by subtracting some light from the total spectrum,the result looks the same to the eye.The additive process was employed for early color photography. But the subtractive method,while requiring complex chemical techniques,has turned out to be more practical and is the basis of all modern color films.

    It can be inferred from the passage that white can be produced by______.
    A:mixing different proportions of magenta,green and red
    B:mixing equal proportions of green,red and blue
    C:mixing different proportions of cyan, yellow and blue
    D:mixing equal proportions of black,red and green

    答案:B
    解析:
    这是一道理解主旨的题。第一段第一句明确提出,照片中的颜色是通过加色法和减色法两种方式形成的。之后二、三段分别详细介绍了两种方式的具体情况。A、B、D选项均不是文章主旨。
    第二段最后一句话提到当等比例的三原色重叠时,形成白色。因此B选项是正确的。
    这是一道关于减色法过程的细节题。根据第三段第二句话可知,减色法中的三原色分别是蓝绿色、紫红色、黄色;它们分别从白色中吸取红色、绿色、蓝色的光波。故可得出蓝绿色吸收的是红色的光波。
    根据文章内容可知,加色法的三原色分别为红、绿、蓝,减色法的三原色分别是蓝绿色、紫红色、黄色。没有黑色和白色。
    根据最后一段可知,通过加色法和减色法所获的特定颜色用肉眼来看效果是一样的。加色法用于早期彩色照片的处理,而减色法虽然需要复杂的化学工艺,却被证实是更为实用的方法,所以它成为了现代彩色胶片的基础。由此可知相对于加色法,减色法更为有效。

  • 第9题:

    Which of the following is the correct pin out for T568B?()

    • A、Orange/white, orange, green/white, blue, blue/white, green, brown/white, brown
    • B、Blue, blue/white, orange/white, orange, brown/white, brown, green/white, green
    • C、Green/white, green, orange/white, blue, blue/white, orange, brown/white, brown
    • D、Orange/white, orange, brown/white, brown, green/white, green, blue, blue/white

    正确答案:A

  • 第10题:

    单选题
    We use () to distill fresh water from sea water.
    A

    engine

    B

    sea water pump

    C

    cylinder cooler

    D

    fresh water generator


    正确答案: C
    解析: 暂无解析

  • 第11题:

    单选题
    public class Ball {  public enum Color { RED, GREEN, BLUE };  public void foo() {  // insert code here  { System.out.println(c); }  }  }  Which code inserted at line 14 causes the foo method to print RED, GREEN, and BLUE?()
    A

     for( Color c : Color.values())

    B

     for( Color c = RED; c <= BLUE; c++)

    C

     for( Color c; c.hasNext() ; c.next())

    D

     for( Color c = Color[0]; c <= Color[2]; c++)

    E

     for( Color c = Color.RED; c <= Color.BLUE; c++)


    正确答案: E
    解析: 暂无解析

  • 第12题:

    多选题
    package sun.scjp;  public enum Color { RED, GREEN, BLUE }  package sun.beta;  // insert code here  public class Beta {  Color g = GREEN;  public static void main( String[] argv)  { System.out.println( GREEN); }  }  The class Beta and the enum Color are in different packages.  Which two code fragments, inserted individually at line 2 of the Beta declaration, will allow this code to compile?()
    A

    import sun.scjp.Color.*;

    B

    import static sun.scjp.Color.*;

    C

    import sun.scjp.Color; import static sun.scjp.Color.*;

    D

    import sun.scjp.*; import static sun.scjp.Color.*;

    E

    import sun.scjp.Color; import static sun.scjp.Color.GREEN;


    正确答案: A,D
    解析: 暂无解析

  • 第13题:

    以下选项中不能正确把c1定义成结构体变量的是

    A.typedef struct { int red; int green;; int blue; }COLOR; COLOR cl;

    B.struct color cl { int red; int green; int blue; };

    C.struet color { int red; int green; int blue; }c1;

    D.struct { int red; int green; int blue; }cl;


    正确答案:B
    解析:结构体类型的定义格式为:
      stract结构体名
      成员说明列表};
      结构体变量的定义有3种形式:第一种,定义结构体类型的同时定义结构体变量,如: street结构体名{成员说明列表}变量;第二种,先定义一个结构体类型,然后使用该类型来定义结构体变量,如:strect student{成员说明列表};student变量;第三种,定义一个无名称的结构体类型的同时定义结构体变量,如:strect student{成员说明列表}变量;。

  • 第14题:

    下列选项中不能正确定义结构体的是_______。

    A.typedef struct

    B.struct color cl {int red; {int red; int green; int green; int blue; int blue; }COLOR; }; COLOR cl;

    C.struct color

    D.struct {int red; {int red; int green; int green; int blue; int blue; }cl; }cl;


    正确答案:B
    解析:将一个变量定义为标准类型与定义为结构体类型不同之处在于:后者不仅要求指定变量为结构体类型,而且要求指定为某一特定的结构体类型(例如,struct color),不能只指定结构体名。其中可以不出现结构体名,答案D就是缺省结构体名的隋况。而变量名歹婊必须放在成员列表后面,所以B答案不能正确将cl定义为结构件变量。

  • 第15题:

    对于这样的一个枚举类型:

    enum Color:byte

    {

    Red,

    Green,

    Blue,

    Orange

    }


    正确答案:
    答:string[] ss=Enum.GetNames(typeof(Color));
         byte[] bb=Enum.GetValues(typeof(Color));

  • 第16题:

    阅读以下说明和 Java 代码,填补代码中的空缺,将解答填入答题纸的对应栏内。 【说明】 设计 RGB 方式表示颜色的调色板,进行绘图。其类图如图 6-1 所示。该程序的 Java代码附后。图6-1 类图

    【Java 代码】 //颜色类 class MyColor { private int red ,green, blue; public MyColor( ) { red = o; green = 0; blue = 0; } public MyColor(int red ,int green ,int blue) { this.red = red; this.green = green; this.blue = blue; } //其他方法略 public String toString( ) { return "Red: " + red + "\tGreen: " + green + "\tBlue " + blue; } } //调色板类 class Palette { public int number; / /颜色数 private (1)palette; //颜色表 public Palette( ) { number = 256; palette = new MyColor[number); } public Palette(MyColor[] palette ,int number) { (2)= number; (3)= palette; } //其他方法略 public String toString( ) { String str = ""; for (int i = 0; i < number; i++) { str +=i+ " : " + palette[i] + "\n"; } return str; } //绘图类 class Drawing { public (4) int COLORNUMBER = 16; public static void main(String[] args) { Palette palette; int red ,green ,blue; MyColor[] color = new MyColor[COLORNUMBER]; for (int i = 0; i < COLORNUMBER; i++) { red = (int) (Math.random( ) * 256); green = (int) (Math.random( ) * 256); blue = (int) (Math.random( ) * 256); color [i] = (5) (red ,green ,blue); } palette = new Palette(color ,COLORNUMBER); System.out.println(palette); } }


    正确答案:(1) MyColor[]
    (2) this.number
    (3) this.palette
    (4) static final
    (5) new MyColor

  • 第17题:

    The traffic lights were red when the driver reached them.To the surprise of his passenger,the ear did not slow down.Unexpectedly the passenger was thrown forward in the vehicle as the driver put on his brakes at the last moment.The car stopped just in time.
    "Sorry,I didn't notice the light.I thought it was green until I saw that it was the top light which was shining."
    This strange story is quite true.About ten men in every hundred are color blind in some way;women are luckier--only about one in two hundred suffers from color blindness.
    In some cases,a man may not be able to see deep red.He may think that red,orange and yellow are all the same as green.
    People often like one color more than others.Blue is the color of the sky and sea.Green makes us think of fields and trees.Red is the color of blood and makes some people think of danger.Black is the color of night.In the dark we cannot see what is around us so we are sometimes afraid of the unknown and do not like black as a color.

    Among the traffic lights,red light is placed__.

    A.at the bottom
    B.in the middle
    C.at the top
    D.below the green light

    答案:C
    解析:
    参见第二段。

  • 第18题:

    共用题干
    第三篇

    Ways to Create Colors in a Photograph

    There are two ways to create colors in a photograph.One method called additive,starts with three basic colors and adds them together to produce some other color. The second method,called subtractive,starts with white light(a mixture of all colors in the spectrum)and,by taking away some or all other colors,leaves the one desired.
    In the additive method,separate colored lights combine to produce various other colors.The three additive primary colors are green,red and blue(each providing about one-third of the wavelengths in the total spectrum).Mixed in varying proportions,they can produce all colors.Green and red light mix to produce yellow,red and blue light mix to produce magenta(a purplish pink);green and blue mix to produce cyan(a bluish green).When equal parts of all three of these primary-colored beams of light overlap(重叠),the mixture appears white to the eye.
    In the subtractive process colors are produced when dye(染料)absorbs some wavelengths and so passes on only part of the spectrum.The subtractive primaries are cyan,magenta and yellow; these primaries or dyes absorb red,green and blue wavelengths respectively,thus subtracting them from white light. These dye colors are the complementary colors to the three additive primaries of red,green and blue.Properly combined,the subtractive primaries can absorb all colors of light, producing black.But,mixed in varying proportions,they too can produce any color in the spectrum.
    Whether a particular color is obtained by adding colored lights together or by subtracting some light from the total spectrum,the result looks the same to the eye.The additive process was employed for early color photography. But the subtractive method,while requiring complex chemical techniques,has turned out to be more practical and is the basis of all modern color films.

    What does the passage mainly discuss?
    A: Recent developments in camera technology.
    B:How to make white light.
    C:The additive and subtractive methods of producing color.
    D:The discovery of the spectrum.

    答案:C
    解析:
    这是一道理解主旨的题。第一段第一句明确提出,照片中的颜色是通过加色法和减色法两种方式形成的。之后二、三段分别详细介绍了两种方式的具体情况。A、B、D选项均不是文章主旨。
    第二段最后一句话提到当等比例的三原色重叠时,形成白色。因此B选项是正确的。
    这是一道关于减色法过程的细节题。根据第三段第二句话可知,减色法中的三原色分别是蓝绿色、紫红色、黄色;它们分别从白色中吸取红色、绿色、蓝色的光波。故可得出蓝绿色吸收的是红色的光波。
    根据文章内容可知,加色法的三原色分别为红、绿、蓝,减色法的三原色分别是蓝绿色、紫红色、黄色。没有黑色和白色。
    根据最后一段可知,通过加色法和减色法所获的特定颜色用肉眼来看效果是一样的。加色法用于早期彩色照片的处理,而减色法虽然需要复杂的化学工艺,却被证实是更为实用的方法,所以它成为了现代彩色胶片的基础。由此可知相对于加色法,减色法更为有效。

  • 第19题:

    共用题干
    第三篇

    Ways to Create Colors in a Photograph

    There are two ways to create colors in a photograph.One method called additive,starts with three basic colors and adds them together to produce some other color. The second method,called subtractive,starts with white light(a mixture of all colors in the spectrum)and,by taking away some or all other colors,leaves the one desired.
    In the additive method,separate colored lights combine to produce various other colors.The three additive primary colors are green,red and blue(each providing about one-third of the wavelengths in the total spectrum).Mixed in varying proportions,they can produce all colors.Green and red light mix to produce yellow,red and blue light mix to produce magenta(a purplish pink);green and blue mix to produce cyan(a bluish green).When equal parts of all three of these primary-colored beams of light overlap(重叠),the mixture appears white to the eye.
    In the subtractive process colors are produced when dye(染料)absorbs some wavelengths and so passes on only part of the spectrum.The subtractive primaries are cyan,magenta and yellow; these primaries or dyes absorb red,green and blue wavelengths respectively,thus subtracting them from white light. These dye colors are the complementary colors to the three additive primaries of red,green and blue.Properly combined,the subtractive primaries can absorb all colors of light, producing black.But,mixed in varying proportions,they too can produce any color in the spectrum.
    Whether a particular color is obtained by adding colored lights together or by subtracting some light from the total spectrum,the result looks the same to the eye.The additive process was employed for early color photography. But the subtractive method,while requiring complex chemical techniques,has turned out to be more practical and is the basis of all modern color films.

    What color filter would absorb red wavelengths?
    A:Red.
    B:Magenta.
    C:Cyan.
    D:Yellow.

    答案:C
    解析:
    这是一道理解主旨的题。第一段第一句明确提出,照片中的颜色是通过加色法和减色法两种方式形成的。之后二、三段分别详细介绍了两种方式的具体情况。A、B、D选项均不是文章主旨。
    第二段最后一句话提到当等比例的三原色重叠时,形成白色。因此B选项是正确的。
    这是一道关于减色法过程的细节题。根据第三段第二句话可知,减色法中的三原色分别是蓝绿色、紫红色、黄色;它们分别从白色中吸取红色、绿色、蓝色的光波。故可得出蓝绿色吸收的是红色的光波。
    根据文章内容可知,加色法的三原色分别为红、绿、蓝,减色法的三原色分别是蓝绿色、紫红色、黄色。没有黑色和白色。
    根据最后一段可知,通过加色法和减色法所获的特定颜色用肉眼来看效果是一样的。加色法用于早期彩色照片的处理,而减色法虽然需要复杂的化学工艺,却被证实是更为实用的方法,所以它成为了现代彩色胶片的基础。由此可知相对于加色法,减色法更为有效。

  • 第20题:

    以下程序的输出结果是()。enumColor{Red,Green=2,Blue}staticvoidMain(string[]args){Colorc=0;Colorc1=(Color)2;Console.WriteLine("{0},{1}",c,c1);Console.Read();}

    • A、Green,Red
    • B、Red,Green
    • C、Red,Blue
    • D、Green,Blue

    正确答案:B

  • 第21题:

    单选题
    () is the production of pure water from sea water by evaporation and re-condensing.
    A

    Evaporation

    B

    Circulation

    C

    Condensation

    D

    Distillation


    正确答案: A
    解析: 暂无解析

  • 第22题:

    单选题
    A student is instructed to arrange four cards in a row on a table. She has six cards to choose from, each of which has a different color: black, red, blue, green, yellow, and brown. If the student follows these instructions but otherwise chooses her cards randomly, what is the probability that her arrangement will be blue, red, yellow, and green, in that order?
    A

    1/90

    B

    1/ 180

    C

    1/360

    D

    1/540

    E

    1/720


    正确答案: B
    解析:
    从6张不同颜色的卡片中选出其中四张排列为1列,第一张卡片有6中选择,第二张卡片有5中选择,以此类推,第三张和第三张卡片分别有4种和3种选择,所以将4张卡片排在一起的可能性为6 x 5 x 4 x 3 = 360种。所以概率为1/360。

  • 第23题:

    单选题
    The color _____ from yellow through green to black.
    A

    consists

    B

    constitutes

    C

    composes

    D

    ranges


    正确答案: C
    解析:
    range排列。在……范围内变动。consist组成。constitute构成,建成。compose组成。