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【判断题】
在MySQL中,用truncate命令清空父表中的记录,将永远执行失败。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】可行性研究的内容包括（ ）。
【单选题】Kevin: Look! It's broken. I told you it wasn't working. Linda: Of course it won't work! See, the ink box indicator is flashing. You have to change it. Kevin: I' m sorry. I didn' t know what it meant. ...
A.
It doesn’t flash.
B.
There isn't ink.
C.
It's broken.
D.
It should be changed.
【单选题】听力原文：W: Look, I'm sorry, but (23)the books for Chem. 100 aren't in yet. M: Why not? School started last week. W: I really don't know. Maybe the professor ordered them late, or the publisher ran out of...
A.
A notice on the bulletin board.
B.
A book for a class the man is taking.
C.
A chemistry class that is being taught.
D.
The library reserve desk.
【简答题】可行性研究的内容包括（ ）。
【简答题】可行性研究的内容包括经济可行性、【 】可行性和操作可行性。
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