Before 'stand by' is rung on the engine telegraph
Before "stand by" is rung on the engine telegraph, it is usual to give the main diesel engine a brief trial ahead and astern.
A.with power
B.on power
C.with air
D.on air
请帮忙给出正确答案和分析，谢谢！
参考解答
46j***779
2024-06-14 18:21:28
正确答案：B
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