单项选择题
A.Cargo winches B.Mooring winches C.Windlasses D.Cargo hatches
The drive motor will have a brake arranged to fail-safe...
单项选择题The drive motor will have a brake arranged to fail-safe, ieit will （） the load if power fails or machine is stopped.
A.lift B.put C.take D.hold
（） are used to handle anchors and chains.A.Cargo winche...
单项选择题（） are used to handle anchors and chains.
Among the basic categories of equipment, which of the f...
单项选择题Among the basic categories of equipment, which of the following are used to allow the hydraulic energy to be controlled?（）
A.hydraulic pumps B.valves C.hydraulic cylinders D.hydraulic motors
