單項(xiàng)選擇題The bore of each cylinder is formed in a liner which can be () when worn out.

A.welded
B.replaced
C.drilled again
D.bored


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1.單項(xiàng)選擇題The bed-plate is secured in the longitudinal direction by means of bolts known as ().

A.end-chock bolts
B.side-chock bolts
C.through bolts
D.tie rods

2.單項(xiàng)選擇題The bearing shells depend on the accuracy of () to held them in a truly circular shape.

A.the gap
B.the clearance
C.the bore
D.the housing

4.單項(xiàng)選擇題The auxiliary engine and a cgenerator can be connected with ().

A.cam
B.crosshead
C.bulge
D.coupling

5.單項(xiàng)選擇題The amount of lubricating oil in the drain tank should be checked by ().

A.measuring
B.sounding rod
C.metering
D.weighting