你可能感興趣的試題

單項(xiàng)選擇題

The piston moves up and down, thus causing the rotational movement of the（）

A.crankshaft
B.connecting rod
C.cross-head
D.main beating

單項(xiàng)選擇題

The piston cooling system may employ similar components, except that a drain tank is used instead of a head tank That means this system （）.

A.doesnt use a drain tank but a head tank
B.uses a drain tank not head tank
C.uses a drain tank and a head tank
D.uses neither a drain tank nor a head tank