A ()can give power to hoist or lower the cargo.A、craneB、life winchC、derrickD、cargo winch
A ()can give power to hoist or lower the cargo.
- A、crane
- B、life winch
- C、derrick
- D、cargo winch
相关考题:
Pedestal cranes have limit switches to restrict movement of which function(s)________.A.Hoist upper & lower limitsB.Luff travel limitsC.Rider block hoist upper & lower limitsD.All of the above
If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power,which will occur ________.A.A pawl,forced by a spring mechanism,will engage the teeth of the bull gear and hold the loadB.An electromagnetic brake will hold the load where it is suspendedC.The load will fall rapidly to the deck unless the foot brake is engagedD.The load will slowly lower to the deck under control of the drag of the winch motor
The ()(浮吊) can float on water used to load and unload the cargo.A、floating craneB、jumbo boomC、union purchaseD、crane
()carries not only general cargo but also bulk cargo.A、A bulk carrierB、A multi-purpose shipC、A general cargo shipD、A dry cargo ship
单选题If an attempt is made to hoist a load that exceeds the capacity of an electric winch,an overload safety device causes a circuit breaker to cut off the current to the winch motor().Awhen the line pull reaches the rated winch capacityBafter the line pull exceeds the rated winch capacityCafter a short build-up of torqueDimmediately
单选题It’s()to stow optional cargo in the lower hold.You’d better give it block stowage in the tweendecks,then it can be easily discharged either at Shanghai,or Dalian or Tianjin.ApossibleBimpossibleCproperDimproper