题目内容

直接启动的优点和不足？

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全压起动：电动机在额定电压下起动称为全压起动，又称__________________

直接启动适用于：______________________________________.

1.The familiarity with HTML and CSS orthe ability to realize the special difficultiesfaced by users.

A. 对
B. 错

The purpose of validating the codes is to reduce possible problems the invalidcode causes.

A. 对
B. 错