單項(xiàng)選擇題

Which of the following can be used in hydraulic transmission system?（）

A.Hydraulic oil
B.Animal oil
C.Light oil
D.Fuel oil

你可能感興趣的試題

單項(xiàng)選擇題

（） play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.

A.Motors
B.Check valves
C.Safety valves
D.Reducing valve

單項(xiàng)選擇題

Cargo handling unit is rated according to the （） to be lifted.

A.cargo crane
B.jib
C.safe working load
D.oil pressure