单项选择题
The engine in a covered lifeboat is fueled with（）.
A.kerosene B.unleaded gasoline C.diesel oil D.liquefied gas
单项选择题 Sudden unloading of a diesel engine can cause（）.
单项选择题 Storage batteries on T-Boats must be located（）.
单项选择题 Please supply my vessel（）120 tons of diesel oil.
