题目内容
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提问人:网友bingleng9900
发布时间:2022-01-06
[主观题]
Although the crankshafts of medium diesel engines appear to be robust, they rely on the su
pport of _____ to develop their full strength.
A.the piston rods
B.the crank throws
C.the thrust bearings
D.the main bearings
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