單項選擇題

（） is made of a boss with separated blades mounted into it.

A.A variable pitch propeller
B.A variable pitch nut
C.A fixed pitch parallel
D.A fixed pitch screw

你可能感興趣的試題

單項選擇題

（） is fully floating in both connecting rod small end and the piston skirt.

A.The piston rod
B.The cross head pin
C.The gudgeon pin
D.The crank-pin

單項選擇題

（） is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tank.

A.A filter
B.A centrifuge
C.A distiller
D.A generator