单项选择题
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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单项选择题
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 -
单项选择题
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 -
单项选择题
The bearing shell generally has （） for location and oil grooves round the center of its axial length.
A.tips
B.tags
C.lips
D.keys
