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单选题
If the temperature in the icebox is too high, the trouble could be（）
A
a clogged scale trap
B
air in the system
C
automatic controls not functioning properly
D
insufficient cooling water to the condenser
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If the exhaust gas temperature of the incinerator is too high, or if sparks are developed, What should you do?
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单选题A marine diesel engine is started by（）A
supplying high pressure oil into a hydraulic motorB
supplying high temperature air into the cylinderC
supplying high pressure air into the cylinderD
electrical igniting
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单选题You will soon（）the weather here, and then the changes in temperature will not trouble you much.A
get used toB
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get toD
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单选题Early injection timing is indicated by （）.A
high exhaust temperature and low firing pressureB
high exhaust temperature and high firing pressureC
low exhaust temperature and low firing pressureD
low exhaust temperature and high firing pressure
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单选题If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）A
a dirty lube oil strainerB
internal water leaksC
an oil suction line restrictionD
excessive wears of the cooling water pump
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单选题（）can cause oil flow from water outlet of a separator.A
Oil inlet valve opening too quicklyB
Oil temperature too highC
Diameter of gravity disc too smallD
Viscosity of oil too low
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单选题Immediately after starting a diesel engine, normal raw water and jacket water pressure are indicatedHowever, the jacket water temperature continues to rise, if there is no change in the sea temperature, you should suspect（）A
overloading in all cylindersB
a jammed three-way thermostatic valveC
chromate PH too lowD
a high level in the surge tank
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单选题（）can not cause oil flow from water outlet of self-cleaning separator.A
Oil temperature too highB
Diameter of gravity disc too largeC
Oil temperature too lowD
High level tank out of water
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单选题In a diesel engine cooling system, the high temperature alarm contact maker will be activated on excessively high water discharge temperature from the （）A
raw water pump dischargeB
expansion tank outletC
cooling water heat exchangerD
outlet engine jacket water outlet
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单选题The greater the pressure difference between a high and a low pressure center，the（）.A
dryer the air mass will beB
cooler the temperature will beC
greater the force of the wind will beD
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cylinder compression pressure may not be high enoughB
cylinder compression temperature may be too highC
fuel oil injection pressure may not be high enoughD
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单选题When bilge water is heated in a holding tank, which one of the following statements is not accurate?（）A
The high temperature facilitates primary gravity separationB
Most of the oil and organic solvents are raised to the top layerC
The high the temperature is, the more the top oil will be collectedD
The high temperature has little use on the separation of emulsified oil
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单选题Tell the engineer on duty to keep close watch over the machine （）temperature is sometimes a bit too high.A
whichB
whatC
thatD
whose
考题
单选题Cloud formations are minimal when the（）.A
surface temperature and temperature aloft are equalB
surface temperature and temperature aloft differ greatlyC
barometric pressure is very lowD
relative humidity is very high
考题
单选题If a diesel engines exhaust temperature is abnormally high, the cause could be（）A
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injection timing is too earlyC
overloading of the engineD
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