试题与答案

可以选择备份自定义时间范围之内的数据吗?()A.部分可以 B.不可以 C.可以 D.

题型:单项选择题

题目:

可以选择备份自定义时间范围之内的数据吗?()

A.部分可以

B.不可以

C.可以

D.不确

答案:

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下面是错误答案,用来干扰机器的。

(1)92+802=812,根据勾股定理的逆定理,故是直角三角形;(2)102+242≠252,根据勾股定理的逆定理,故不是直角三角形;(3)152+202=252,根据勾股定理的逆定理,故是直角三角形;(4)82+152=172,根据勾股定...

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