参考答案和解析

正确答案:错误

更多“The walk-up rate at a hotel is the price charged to a customer who arrives without a reservation.It's usually about 30% less expensive than the online booking rate.() ”相关问题
  • 第1题:

    How many hours of housework did men do every week in the 1970s?

    A. About 23. B. About 26.

    C. About 13. D. About y.


    正确答案:D

  • 第2题:

    The MP4 costs only 200 yuan.I think it,s_________(expensive).


    正确答案:
    48.inexpensive

  • 第3题:

    使用SQL语句将表s中字段price的值大于30的记录删除,正确的命令是( )。

    A.DELETE FROM S FOR price>30

    B.DELETE FROM sWHERE price>30

    C.DELETE S FOR pricC>30

    D.DELETE S WHERE pricC>30


    正确答案:B

  • 第4题:

    How many hours of housework did men do every week in the 1970s?

    A.About 23.

    B.About 26.

    C.About 13.

    D.About y.


    正确答案:D

  • 第5题:

    The general manager of the hotel makes a point of explaining ( ) to all new hands.

    A. hotel's tariff

    B. hotel's culture

    C. hotel's income

    D. business concept


    正确答案:BD

  • 第6题:

    使用SQL语句将表S中字段price的值大于30的记录删除,正确的命令是

    A.DELETE FROM s FOR price>30

    B.DELETE FROM s WHERE price>30

    C.DELETE s FOR price>30

    D.DELETE s WHERE price>30


    正确答案:B
    解析:SQL语句中,删除记录的命令格式为DELETE FROM表名WHERE…,此题要求将表s中字段price的值大于30的记录删除,所以条件应为price>30,即WHERE price>30。选项A)和C)中用来指定条件的FOR短语是错误的,应该用WHERE;选项D)中没有用FROM来指明删除的记录来自哪个表,故选B)。