题目内容

3.6顺序功能图中，在运行开始时，必须作好预驱动，一般可用（）或（）进行驱动。

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Match the English expressions to the approprite translations

Match the English statements to the corret translations.

____ most bamboo blooms every year, there are some species that flower only two or three times a century.

A. Whenever
B. That
C. While
D. However

_____some people criticize graffiti for being ugly and destructive, those graffiti lovers still see it as a real art.

As
B. While
C. Once
D. Until