During the dock repair, when installing the tail shaft and propeller, who should be on the spot to supervise?（）<br>A:chief engineer<br>B:the engineer<br>C:captain<br>D:any member of the engine department

During the dock repair, when installing the tail shaft and propeller, who should be on the spot to supervise?（）
A:chief engineer
B:the engineer
C:captain
D:any member of the engine department

出自：海船船员证

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