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
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