单项选择题
The most effective method in removing water from diesel fuel oil is by（）
A.centrifuging the fuel B.using it in the engine C.heating the fuel tanks D.starting the fuel
单项选择题 On board supply vessels, a centrifuge is normally used to purify（）
单项选择题 Water accumulating in the crankcase of a diesel engine could indicate（）
单项选择题 The device used to store a charged pressure for a hydraulic starting system is called the（）
