单项选择题
A.damage to the un-loader operating diaphragm
B.an increase in current flow to the motor
C.high pressure in the receiver and filter
D.an excessive consumption of crankcase oil
单项选择题 Under normal operating conditions, the highest temperature and pressure conditions existing in a flash-type evaporator will occur in the （）.
单项选择题 Which of the listed conditions will cause the feed water that has not flashed to vapor in the first-stage of a flash evaporator, to flow into the second-stage?（）
单项选择题 A dirty intercooler on the ship service air compressor will result in （）.