Electric cargo winches have an overloa

Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.

Aafter torque cause line pull to exceed the rated capacity of the winch
Bbefore the line pull reaches the rated capacity of the winch
Cwhen the line pull reaches the breaking strengh of the fall
Dbefore the safe working load of the fall is reached

参考答案

参考解析：

分类：航海英语综合练习题库

Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.Aafter torque causes line pull to ...

2、When would you ground an electric hand

When would you ground an electric hand tool?（）AWhen it is a DC machineBWhen it is an AC machineCAny machine that operates on over 100 voltsDOnly when working on wet steel plate

3、An electric heater built into some sma

An electric heater built into some smaller diesel engines is used to （）.Araise lube oil viscosity for easier starting in cold weatherBincrease...

4、If the electric motor driving an air c

If the electric motor driving an air compressor fails to start, the cause may be a （）.Aleaking unloaderBtripped circuit breakerCcontrol line leakDdefective pop valve

5、The oil in a cargo winch gear box shou

The oil in a cargo winch gear box should be sampled periodically to （）.Aprevent the gear box from leakingBprevent the oil from becoming inflammableCmake sure it has not become contaminatedDmake sure the motor bearings are lubricated

6、The backup system on an electric start

The backup system on an electric start survival craft is a（）.Ahydraulic systemBpneumatic systemCspare batteryDhand crank

编辑推荐

相比于蒸汽轮机，以下哪个关于燃气轮机的特点的描述是错误的.....

单位卡不得用于5万元以上的商品交易、劳务供应款项的结算。（）..

热喷锌用的锌丝含锌量应不低于（）。..

计划生育技术服务机构发生并发症后，处理正确的是（）..

篡改、伪造个人档案资料，情节严重的，给予（）处分。..

浅孔爆破是指（）的钻孔爆破。..