单项选择题
A.crankcase B.cylinder C.scavenge box D.piston
The hand steering is a method by which the motion of th...
单项选择题The hand steering is a method by which the motion of the rudder is controlled with （）.
A.a motor-driven steering wheel B.a pneumatic steering wheel C.a hand-driven steering wheel D.an electric steering wheel
The gudgeon pin is carried in （） in the piston skirt.A....
单项选择题The gudgeon pin is carried in （） in the piston skirt.
A.the bearing B.the crosshead C.bosses D.bridges
The governor of a generator engine is to （）.A.make the ...
单项选择题The governor of a generator engine is to （）.
A.make the engine stop B.regulate the timing of camshafts C.make the rpm stabilize at any required value D.make the engine run at nearly constant speed
