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Running an electric winch at slow speed over a long period of time causes ______．
A.the speed to be retarded by the friction brake
B.a load to go downward at full speed
C.the circuit breaker to turn off
D.the resistors to overheat and eventually burn out
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更多 “ Running an electric winch at slow speed over a long period of time causes ______．A.the speed to be retarded by the friction brakeB.a load to go downward at full speedC.the circuit breaker to turn offD.the resistors to overheat and eventually burn out ” 相关考题
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