单项选择题

The piston rings are manufactured with a diameter （） the bore of the cylinder.

A.larger than
B.smaller than
C.equal to
D.none of the above

点击查看答案&解析

上一题目录下一题

单项选择题

A.chromium-plate against wear
B.anti-corrosion treated
C.white metal lined against wear
D.flame hardened against wear

单项选择题

A.to revolve
B.revolved
C.revolving
D.to be revolved

单项选择题

A.crankshaft
B.connecting rod
C.cross-head
D.main beating