A.Condenser leakage
B.A shortage of liquid refrigerant
C.Excessive frost on the evaporator
D.Not enough condenser cooling water

A.high discharge pressure
B.frosting of the crankcase
C.high temperature of the overboard water
D.low suction pressure of compressor

A.upper part of the receiver
B.upper part of the condenser
C.down stream end of the cooling coil
D.outlet end of the condenser

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