单选题Crank web deflection readings will give a positive indication of （）.Aworn main bearing journalsBtorsional stress deformationCslack thrust bearingsDbearing shells shim dimensions
单选题
Crank web deflection readings will give a positive indication of （）.
A
worn main bearing journals
B
torsional stress deformation
C
slack thrust bearings
D
bearing shells shim dimensions
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名词解释题crank