单项选择题
The hot expanding gas rotates the blades of the exhaust turbine, thus giving out large part of its power, which drives （）.
A.the oil separator B.the fresh water generator C.the compressor D.fire pump
单项选择题 The high pressure in fuel injection system of the diesel engine is produced by the （）.
单项选择题 The heart of the diesel engine is the （） where the fuel is burnt and the power developed.
单项选择题 The hand steering is a method by which the motion of the rudder is controlled with （）.
