A.screwed
B.welded
C.fastened
D.rotated
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A.steel
B.copper
C.cast iron
D.stainless steel
A.around
B.among
C.in
D.between
A.frame
B.piston
C.crankcase
D.explosion plate
A.screwing into
B.being screw on
C.to screw on
D.screwed into
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
最新試題
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