for the release of air
for the release of water
in order to the release of air
because the release of air
第1题：
Gasoline fuel tank vents should terminate ______．
A.In the engine compartment
B.In the fuel tank space
C.Above or outside the hull
D.At the most convenient location
第2题：
第3题：
What is head tank in the closed cooling water system used for?
A.for the release of air from the cooling water
B.providing expansion room for heated cooling water
C.a place for implementing water and water treatment agent
D.all of the above
第4题：
Leaking seal ring
Insufficient heat transfer from the exhaust valves
Block cooling water passages to the head
Excessive scavenging air provided to the engine
第5题：
for the release of air from the cooling water
providing expansion room for heated cooling water
a place for implementing water and water treatment agent
all of the above
第6题：
What is the purpose of pressure-vacuum relief valves ________．
A.Regulation of discharge pressure from cargo pumps
B.Maintaining constant velocity in cargo lines
C.Regulation of suction head on cargo pumps
D.To maintain a tank or void at atmospheric pressure
第7题：
one meter from the tank bottom and one meter below the tank top
one half the ullage of the tank and one meter below the tank top
one half the ullage of the tank and one meter above the tank bottom
at three meter intervals from the tank top to the bottom
第8题：
Lubrication for the main reduction gears used with diesel engines is usually supplied by
A.oil from the main engine sump
B.an independent lube oil system
C.the stern bearing head tank
D.the stem bearing sump tank
第9题：
oil from flowing out of the tank vent
air from entering the tank vent
vapors from leaving the tank vent
flames on deck from entering the tank vent
第10题：
discharge side of the centrifugal pump
suction side of the centrifugal pump
the lowest point of the cooling water system
inlet of the main engine