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单选题
A deep draft VLCC (100，000 DWT+) navigating in a narrow channel or canal（）.
A
draws more water than when underway in deep water
B
draws less water with an increase in speed
C
requires less power for a given speed
D
steers better under full power
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单选题A vessel travelling down a narrow channel，especially if the draft is nearly equal to the depth of the water，may set off the nearer side. This effect is known as（）.A
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单选题When anchoring，good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use（）.A
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单选题A common occurrence when a vessel is running into shallow water is that（）.A
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squat will cause a decrease in bottom clearance and an increase in draftD
All of the above
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单选题A VLCC (100，000 DWT+) with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a（）.A
bigger propellerB
smaller power to weight ratioC
smaller propellerD
larger power to weight ratio
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单选题In a diesel engine jacket water cooler, with seawater cooling the fresh water, the（）A
sea water temperature must never be warmer than 40℃B
jacket water pressure should always be greater than the sea water pressureC
jacket water temperature must always be less than 60℃D
jacket water pressure must always be less than the sea water pressure
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单选题Which of the following statements is true concerning an oil cooler?（）A
The oil temperature is less than the cooling water temperatureB
The oil pressure is less than the cooling water pressureC
The oil pressure is greater than the cooling water pressureD
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单选题When the vessel on the full speed ahead, if full astern immediately （） the main engine start astern and fuel injection.A
after the thrust power is zeroB
after the torsion is zeroC
surpass the critical point on the water turbo phaseD
after the speed is zero
考题
单选题A deep draft VLCC (100，000 DWT+) navigating in a narrow channel or canal（）.A
draws more water than when underway in deep waterB
draws less water with an increase in speedC
requires less power for a given speedD
steers better under full power
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单选题The following are the reasons why British coal mining is today called a"sick"industry except（）A
Britain has used up almost all coal depositsB
the demand for British coal has declinedC
petroleum,water power,and electric power are replacing coal for many purposesD
the old British mines are narrow and deep,making it difficult to sue machines fro mining.
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