单项选择题
A.frame B.piston C.crankcase D.explosion plate
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 studs （） the cylinder frames.
A.screwing into B.being screw on C.to screw on D.screwed into
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
