题目内容

Once computers ______ how to do it, they will do many things for us.

A. tell
B. told
C. are told
D. are telling

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Generally speaking, I prefer mineral water _____ tea.

A. to
B. for
C. with
D. from

试画出开环控制系统与闭环控制系统框图，并比较开环控制系统和闭环控制系统的优缺点。

按崩解时限检查法检查,中药浸膏片应在多长时间内崩解

A. 60min
B. 40min
C. 30min
D. 15min
E. 10min

按崩解时限检查法,全粉片应在多长时间内崩解

A. 30min
B. 60min
C. 120min
D. 90min
E. 80min