单项选择题
The piston moves up and down, thus causing the rotational movement of the（）
A.crankshaft
B.connecting rod
C.cross-head
D.main beating
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相关考题
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单项选择题
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 -
单项选择题
The piston cooling system may employ similar components, except that （） is used instead of a head tank.
A.a sump tank
B.a feed well
C.a double bottom tank
D.a drain tank -
单项选择题
The pistons are cooled by oil supplied from the forced （） system.
A.fresh water
B.sea water
C.lubrication
D.fuel oil
