單項(xiàng)選擇題
A.icing of the automatic controls B.embrittlement of some parts of the automatic controls C.sludge in the lubricating oil D.all of the above
A.low water level B.high water level C.excessively high fuel pressure D.low oil temperature
A.excessive water in the bilges B.a clogged suction strainer C.oil in the bilges D.All of the above
A.in the store room B.in the cylinder C.in the scavenge air box D.in the water box
A.carry off B.carry down C.carry on D.carry over
A.gravity B.diameter C.circumference D.cylinder
A.displacement B.weight C.power D.capacity
A.should be paved B.should be cleaned C.should be dismantled D.should be welded
A.fulfill B.eliminate C.grease D.bend
A.Condenser and thermal expansion valve B.King and solenoid valves C.Compressor and thermal expansion valve D.Condenser and solenoid valve
A.Too much refrigerant B.Too little refrigerant C.Refrigerant is ran out D.Running is over
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