Which of the following statements about an LCD screen is not true?()A. An LCD screen consumes more power than a CRT screen.B. An LCD screen display may present high-quality images but only to viewers sitting directly in fron of the screen.C. Currently, al

题目
Which of the following statements about an LCD screen is not true?()

A. An LCD screen consumes more power than a CRT screen.

B. An LCD screen display may present high-quality images but only to viewers sitting directly in fron of the screen.

C. Currently, all laptops use LCD screens.

D. An LCD screen is considerably more expensive than a CRT screen.

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更多“Which of the following statements about an LCD screen is not true?() ”相关问题

  • 第1题：

    You want to test a configured screen value prior to deploying.Which statement will allow you to accomplish this?()

    A. [edit security screen] user@host# show ids-option untrust-screen { alarm-test-only; }

    B. [edit security screen] user@host# show ids-option untrust-screen { alarm-without-drop; }

    C. [edit security screen] user@host# show ids-option untrust-screen { alarm-no-drop; }

    D. [edit security screen] user@host# show ids-option untrust-screen { test-without-drop; }


    参考答案：B

  • 第2题：

    Norman Blarney is an artist of deep convictions.

    A: claims
    B:suggestions
    C: beliefs
    D:statements

    答案：C
    解析：
    句意：诺曼.布莱梅是一个有坚定信念的艺术家，句中画线部分conviction意为 “信念”。claim意为“要求，声称”。suggestion意为“建议”。belief意为“相信，信赖”。 statement意为“声明，陈述”。画线部分和C项意义接近。故选C项。

  • 第3题：

    基于本单元前一个作业【创建Screen类】，为Screen类增加一个私有函数，用于检测屏幕的宽与高是否符合逻辑


    正确

  • 第4题：

    最近在学C＋＋,求解. friend istream& operator>>( istream&, Screen& ); 中&是做什么的呢.一定得要么?

    class Screen { 

     friend istream& 

      operator>>( istream&, Screen& ); 

     friend ostream& 

      operator<< ( ostream&, const Screen& ); 

    public: 

     // ... Screen 类的其他部分 

    };



    &    是引用的符号。相当于别名的意思。返回引用是为了能让操作符连用，运行会快一些。

     

    如定义Screen s1,s2；

    cin>>s1>>s2;

  • 第5题：

    基于本单元的作业3，修改Screen类，添加析构函数；同时补充deleteInstance（)函数，能够删除在createInstance（)中创建的Screen对象；完成单例模式练习


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  • 第6题：

    screen对象可以获得屏幕的大小


    正确

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