题目内容

为了避免正、反控制线路中两个接触器同时得电动作，线路采用了（）。

A. 自锁控制
B. 联锁控制
C. 位置控制
D. 顺序控制

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在采用接触器联锁的控制电路中，通常串联（）。

A. 对方的常开触头
B. 自己的常开触头
C. 对方的常闭触头
D. 自己的常闭触头

在操作接触器、按钮双重联锁或者按钮联锁正、反转控制线路时，要使电动机从正转变为反转，正确的操作方法是（）。

A. 可直接按下反转启动按钮
B. 可直接按下正转启动按钮
C. 必须先按下停止按钮，再按下反转启动按钮
D. 都可以

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Directions: Match the management style to the statement that can best describe it.