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【单选题】
X62W型万能铣床上要求主轴电动机启动时，进给电动机才能启动，这种控制方式称为（）。A.
顺序控制
B.
多地控制
C.
自锁控制
D.
联锁控制
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反馈参考答案：
举一反三
【判断题】In case of a natural forest fire, there are firefighters to put it out with no delay.
A.
正确
B.
错误
【简答题】In case of a natural forest fire, there are firefighters to put it out with no delay.
【判断题】In case of a natural forest fire, there are firefighters to put it out with no delay.
A.
正确
B.
错误
【单选题】In case of a natural forest fire,______.
A.
there are firefighters to put it out with no delay
B.
firefighters, citizens and tourists together will try to put it out
C.
it is allowed to burn until it dies out by itself
D.
.
【简答题】我国城市园林绿地的分类包括: 、 、 、 和 。
【单选题】The force that moves the air in a room or building in case of natural ventilation is due to _______:
A.
Neither
B.
Both
C.
Difference in temperature inside and outside of building
D.
Wind force
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