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单选题
Which of the motors for the devices listed below is fitted with an instantaneous overload relay?()
A
Fan
B
Pump
C
Winch
D
Machine tool
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The rudder angle indicatorC
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单选题Which of the motors for the devices listed below is fitted with an instantaneous overload relay?()A
FanB
PumpC
WinchD
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Steel brushB
Fine emery cloth or steel woolC
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Vacuum breakerC
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