吊机HOOK LIMIT OVER RIDE操作,表示()A、松绳旁路B、向右转C、吊臂下降D、吊钩限位旁路
吊机HOOK LIMIT OVER RIDE操作,表示()
- A、松绳旁路
- B、向右转
- C、吊臂下降
- D、吊钩限位旁路
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单选题A hook that will release quickly is a().Alongshore hookBmargin hookCmarginal hookDpelican hook
单选题The ()(双杆联吊) is that two booms are used with a single hook.AderrickBunion purchaseCtopping lift blockDcrane
单选题The latch of a safety hook().Aincreases the strength of the hookBprevents the sling ring from coming out of the hook if the strain is abruptly easedCprevents the sling ring from coming out of the hook if there is a strain on the sling ringDAll of the above
单选题A towing hook may be released from the().Atug's engineroom or the bowBpilot house or aft steering stationCforecastleDtowing bitts by reaching over and releasing a lever
单选题Before starting to hoist provisions,which should be checked?()AHoist rope is not kinkedBMultiple part lines are not twisted around each otherCThe hook is centrally located over the loadDAll of the above
单选题Placing a lashing across a hook to prevent a fitting from slipping out of the hook is called ().AfakingBflemishing downCmousingDworming
单选题On an electro-hydraulic steering gear, which of the listed devices will keep the rudder from over-traveling the bridge signal?()ARudder angle indicatorBFollow-up gearCElectric transmitterDRudder angle limit switch