单项选择题
Measure （） by means of lead wire.
A.the clearance of the main bearing
B.the diameter of main bearing
C.the hardness of main bearing
D.the tolerance of main bearing
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相关考题
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单项选择题
Measure （） by means of lead wire.
A.the clearance of the main bearing
B.the play of the miler bearing
C.the gap of the main bearing
D.the tolerance of the main bearing -
单项选择题
Marine four-stroke diesel engines are mainly （）.
A.of crosshead type
B.of trunk piston type
C.of low speed type
D.all the above -
单项选择题
Main bearings are required to support the crankshaft at each （）.
A.end
B.web
C.pin
D.journal
