单项选择题 High diesel engine cooling water temperatures can be caused by （）.

单项选择题 The linear motion of a diesel engine piston is converted to the rotary motion required to drive gears, propeller shafts, and generators by the （）.

单项选择题 What is the crank angle between any two crank throws in the firing order of a four-stroke/cycle, in line, eight cylinder diesel engine?（）