单项选择题
A.screwing into B.being screw on C.to screw on D.screwed into
The cylinder covers and the liners are bolted together ...
单项选择题The cylinder covers and the liners are bolted together by means of （）.
A.bolts welded into the cylinder head B.bolts welded into the cylinder frames C.studs screwed into the cylinder head D.studs screwed into the cylinder frames
The cylinder cover is not provided with （）.A.fuel valve...
单项选择题The cylinder cover is not provided with （）.
A.fuel valve B.lubricator C.indicator valve D.the starting valve
The cylinder contains a great weight of air and is capa...
单项选择题The cylinder contains a great weight of air and is capable of burning a great quantity of fuel at（）.
A.the beginning of the compression stroke B.the beginning of the suction stroke C.the end of the working stroke D.the end of the exhaust stroke
