单选题When the vessel shafting are installed, the slightly inclined of the shaft line should be rectified by（）Aadjusting the position of the intermediate bearingBchanging the position of the main engine installationCadjusting the center line of the propellerDchanging the position of the thrust block
单选题
When the vessel shafting are installed, the slightly inclined of the shaft line should be rectified by（）
A
adjusting the position of the intermediate bearing
B
changing the position of the main engine installation
C
adjusting the center line of the propeller
D
changing the position of the thrust block
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