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【单选题】
下面关于函数依赖的叙述中,不正确的是( )A.
若 XY→Z, 则 X→Z,Y→Z
B.
若 X→Y,Y→Z, 则 X→Z
C.
若 X→Y,X→Z, 则 X→YZ
D.
X→Y,Y′ Y, 则 X→Y′
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反馈参考答案：
举一反三
【单选题】The author of the passage advises us__________ ． 查看材料
A.
to use words carefully and accurately
B.
not to use silly and rude words
C.
to become a slave of words
D.
to use emotional words
【简答题】As the second lesson, the author advises the reader that lawyers should not only learn to______ but also learn to______.
【简答题】The author advises the college student to ________. [A] be contemptuous to the craftsman [B] be patient in helping the craftsman with scientific terms [C] learn the craftsman’s experience by judging i...
【单选题】In the last paragraph， the author advises women to________ 查看材料
A.
encourage their husbands to improve their life style
B.
encourage their husbands to go bowling or play poker
C.
give their husbands chances to flee from housework
D.
give their husbands chances for male communication
【简答题】人体测量数据在设计中的使用原则包括: 极端设计原则、可调范围设计原则和:
【简答题】地面点到 铅垂距离称为该点的相对高程
【单选题】The author advises the college student to __________． 查看材料
A.
be contemptuous to the craftsman
B.
be patient in helping the craftsman with scientific terms
C.
learn the craftsman' s experience by judging it carefully
D.
gain the craftsman's experience without rejection
【简答题】The author advises the public to _____. ［A］ leave out factors such as unconscious impulses ［B］ draw lessons of their own from September 11 ［C］ respond decisively to September 11 tragedy ［D］ accept dec...
【简答题】地面点到 铅垂距离称为该点的绝对对高程;地面点到 铅垂距离称为该点的相对高程。
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