题目内容

3.10步进梯形图编程顺序为：先进行驱动处理，后进行转移处理。二者不能颠倒。

A. 对
B. 错

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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。

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