单项选择题
The amount of fuel delivered for each cycle must be in accordance with the engine load, and the same quantity of fuel must be delivered to each cylinder for each power stroke at that load.Which of the following statements describes this requirement?（）
A.Proper timing B.Accurate metering C.Suitable injection rate D.Suitable atomization rate
单项选择题 Air bubbles in a hydraulic governor can cause （）
单项选择题 On a diesel engine equipped with an isochronous governor, if the “speed droop” control is reduced to the “zero” setting, the engine （）
单项选择题 Proper operation of the main engine reduction gear set requires the operation to monitor （）
