单项选择题
According to the relevant regulation, lifeboat should be powered by（）.
A.inboard diesel engine B.outboard diesel engine C.outboard gasoline engine D.inboard gasoline engine
单项选择题 Berthing means bringing a vessel to her berth until（）.
单项选择题 ECDIS must be able to perform all of the following EXCEPT（）.
单项选择题 The mean draft of a ship is the draft（）.
