It can be inferred from the passage that________A.natural materials are safe in food processingB.chemicals are needed in food processingC.food poisoning can be kept under controlD.food poisoning is out of control

题目

It can be inferred from the passage that________

A.natural materials are safe in food processing

B.chemicals are needed in food processing

C.food poisoning can be kept under control

D.food poisoning is out of control

相似考题

1.查询订购单号首字符是“P”的订单信息，应该使用命令A．SELECT * FROM 订单 WHERE HEAD（订购单号，1）=“P”B．SELECT * FROM 订单 WHERE LEFT（订购单号,1）= “P”C．SELECT * FROM 订单 WHERE “P”$订购单号D．SELECT * FROM 订单 WHERE RIGHT（订购单号,1）= “P”

2.These boxes were made of various _materials_______, including steel, wood, and paper.A. partsB. ideasC. sortsD. materials

3.Our tradition ______ be different _____ yours.A、can;withB、must;withC、need;asD、may;from

4.查询订购单号首字符是"P"的订单信息,应该使用命令A．SELECT*FROM订单WHERE HEAD(订购单号,1)="P"B．SELECT*FROM订单WHERE LEFT(订购单号,1)="P"C．SELECT*FROM订单WHERE "P"$订购单号D．SELECT*FROM订单WHERE RIGHT(订购单号,1)="P"

更多“It can be inferred from the passage that________ A.natural materials are safe in food p ”相关问题

  • 第1题：

    查询订购单号首字符是“P”的订单信息，应该使用命令

    A．SELECT*FROM订单WHERE HEAD(订购单号，1)="p"

    B．SELECT*FROM订单WHERE LEFT(订购单号，1)="p"

    C．SELECT*FROM订单WHERE"p"＄订购单号

    D．SELECT*FROM订单WHERE RIGHT(订购单号，1)="p"


    正确答案：B
    解析：＄符号是子串包含测试运算符，RIGHT()是从指定表达式值的右端截取一个指定长度的子串作为函数值，LEFT ()是从指定表达式值的左端截取一个指定长度的子串作为函数值。

  • 第2题：

    查询订购单号首字符是”P”的订单信息，应该使用命令A)SELECT*FROM订单WHERE HEAD（订购单号，1）=”P”B)SELECT*FROM订单WHERE LEFT（订购单号，1）=”P”C)SELECT*FROM订单WHERE “P” $ 订购单号D)SELECT*FROM订单WHERE RIGHT(订购单号,I)=”P”


    正确答案：B
    4个选项中，选项B中的函数LEFT(订购单号，1)的功能是取出订购单号的首字符，将该查询条件置于SQL的WHERE子句，能够实现题目所要求的条件查询，故选项B为正确答案。选项C的查询条件：“P”$订购单号，表示“P”在订购单号中出现，选项D的查询条件：RIGHT（订购单号，1）=“P”,表示订购单号尾字符为“P”。

  • 第3题：

    查询订购单号首字符是"P"的订单信息，应该使用命令

    A．SELECT*FROM订单WHEREHEAD(订购单号，1)="P"

    B．SELECT*FROM订单WHERELEFT(订购单号，1)="P"

    C．SELECT*FROM订单WHERE="P"＄订购单号

    D．SELECT*FROM订单WHERERIGHT(订购单号，1)="P"


    正确答案：B
    解析：本题考查如何使用SQL结合字符串函数实现条件查询。4个选项中，选项B中的函数LEFT(订购单号，1)的功能是取出订购单号的首字符，将该查询条件置于 SQL的WHERE子句，能够实现题目所要求的条件查询，故选项B为正确答案。选项C的查询条件：“P”＄订购单号，表示“P”在订购单号中出现，选项D的查询条件：RIGHT(订购单号，1)=“P”，表示订购单号尾字符为“P”。

  • 第4题：

    查询订购单号首字符是“P”的订单信息，应该使用命令

    A．SELECT*FROM订单WHERE HEAD(订购单号，1)=“P”

    B．SELECT*FROM订单WHERE LEFT(订购单号，1)=“P”

    C．SELECT*FROM订单WHERE “P”$订购单号

    D．SELECT*FROM订单WHERE RIGHT(订购单号，1)=“P”


    正确答案：B
    解析：选项B中的函数LEFT(订购单号，1)的功能是取出订购单号的首字符，将该查询条件置于SQL的WHERE子句，能够实现题目所要求的条件查询，故选项 B为正确答案。选项C的查询条件：“P”$订购单号，表示“P”在订购单号中出现，选项D的查询条件：RIGHT(订购单号，1)=“P”，表示订购单号尾字符为“P”。

  • 第5题：

    查询订购单号首字符是“P”的订单信息，应该使用命令 ______。

    A．SELECT*FROM订单WHEREHEAD(订购单号，1)="P"

    B．SELECT*FROM订单WHERELEFT(订购单号，1)="P"

    C．SELECT*FROM订单WHERE"P" $ 订购单号

    D．SELECT*FROM订单WHERERIGHT(订购单号，1)="P"


    正确答案：B
    解析：$ 符号是子串包含测试运算符，RIGHT()是从指定表达式值的右端截取一个指定长度的子串作为函数值，LEFT()是从指定表达式值的左端截取一个指定长度的子串作为函数值。

  • 第6题：

    In ancient times wealth was measured and exchanged in things that could be touched:food,tools,and precious metals and stones.Then the barter system was replaced by coins,which Still had?real value since they were pieces of rare metal.Coins were followed by fiat money,paper notes that?have value only because everyone agrees to accept them.
    Today electronic monetary systems are gradually being introduced that will transform money into?even less tangible forms,reducing it to a series of"bits and bytes",or units of computerized.information,going between machines at the speed of light.′Already,electronic fund transfer allows money to be?instantly sent and received by different banks,companies,and countries?through computers and telecommunications devices.


    Which of the following statements about computerized monetary systems is NOT supported by the?passage?《》（）

    A.They promote international trade.
    B.They allow very rapid money transfers,
    C.They are still limited to small transactions(交易).
    D.They are dependent on good telecommunications systems.

    答案：C
    解析：
    【考情点拨】推理判断题。【应试指导】由第二段可知，网上货币交易系统非常快速，允许不同银行、公司和国家之间的货币交易，因而也就提高了国际贸易；因为它通过网络操作，所以它依赖于电信系统：只有C项未提到，故选C。

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