单项选择题
Most totally enclosed lifeboats are equipped with which of the following? （）
A.Tanks for the storage of drinking water B.Ballast tanks to prevent the boat from capsizing C.A hydraulic start diesel engine D.Auxiliary mechanical propulsion (Fleming gear)
单项选择题 May I have a copy of the cargo plan?Certainly，here（）.
单项选择题 Masts and derricks of cargo ships are made of（）.
单项选择题 Making cargo plan for appropriate distribution of the cargo on board is（）duty．
