海船船员考试
单选题Water lubricated tailshaft bearings wear,（）A the after one is more than forward oneB the forward one is more than after oneC the forward one is the same with after oneD it depends on the type of engine
题目
the after one is more than forward one
the forward one is more than after one
the forward one is the same with after one
it depends on the type of engine
相似问题和答案
第1题：
What type of stern tube bearing has the least friction ________．
A.Oil-lubricated bearings
B.Lignum vitae
C.Hard rubber
D.Bronze bushings
第2题：
If you must enter water on which there is an oil fire, you should ______.
A.protect your life preserver by holding it above your head
B.enter the water on the windward side of the vessel
C.keep both hands in front of your face to break the water surface when diving head first
D.wear very light clothing
如果你必须进入水中游过油火，你进入水中将游上上风舷。
第3题：
One of the most common causes of reduction gear failure is gear wear caused by scoring as a result of
A.surface fatigue of the gears
B.an inadequate lube oil film
C.plastic flow of the gears
D.fretting corrosion from water
第4题：
well knurled
slightly streaked
lightly glazed
highly polished
第5题：
weigh you down
preserve body heat
reduce your body heat
make it more difficult to breathe
第6题：
If you wear extra clothing when entering the water after abandoning ship it will ______.
A.weigh you down
B.preserve body heat
C.reduce your body heat
D.make it more difficult to bteathe
如果你在弃船后穿了多余的衣服进入水里，他将保护你的体温。
第7题：
line shaft bearings
connecting rod beatings
main bearings
support bearings
第8题：
Stern tube and strut(支柱) bearings lined with hardwood or rubber composition materials are lubricated with______.
A.saltwater
B.graphite(石墨)
C.light lubricating oil
D.heavy lubricating oil
第9题：
Relative
TRUE
Compass
Magnetic
第10题：
the SW outboard valves
the tailshaft LO stop valve
the drain valve of the boiler
propeller shaft sealing device