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发布时间:2023-10-19 07:49:04

[单项选择]In motor-ships, (), after passing through main and motion bearings and oil cooled pistons, etcis either retained in the bedplate.
A. the fuel oil
B. the lubricating oil
C. the refrigerating oil
D. the hydraulic oil

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[单项选择]After passing through the expansion valve the refrigerant should be in the state of ().
A. vapor
B. liquid
C. solid
D. None of the above is tree
[单项选择]After passing through the turbine the exhaust gas is conducted out into the().
A. intercooler
B. compressor
C. cylinder
D. open air
[单项选择]The cleaned heated oil, after passing through the centrifuges, is to be pumped to a ().
A. settling tank
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[单项选择]For a generator engine, after passing through the turbine the exhaust gas may be conducted out into the ().
A. intercooler
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[单项选择]Higher than normal temperature air passing through the intake of a diesel engine will result in()
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[单项选择]A direct current passing through a wire coiled around a soft iron core is the description of a simple().
A. magnetic shield
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[单项选择]If cooling water flow through the after-cooler is interrupted,the power output of a turbocharged diesel engine will drop because the ()
A. turbocharger will stall
B. density of the air charge will decrease
C. scavenge effect will increase
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[单项选择]The main propulsion diesel continues running after you try to shut downYoushould now attempt to()
A. stop the combustion air supply
B. engage the jacking gear
C. secure the lube oil pump
D. shut off the fuel at the day tank
[单项选择]After resolving the trouble of main power supply, main switch of emergency generator should(), if power supply is refreshed.
A. be switched off by the duty officer
B. be switched on by the duty officer
C. be switched off automatically
D. be switched on automatically
[单项选择]After a ship enters service it is() for the main bus-bar to be made dead.
A. usually
B. commonly
C. exceptional
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[单项选择]Two vessels are abreast of each other and passing port to port in a confined waterway. What should you expect as your bow approaches the screws of the other vessel? ()
A. Your speed will significantly increase
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[单项选择]A light used to signal passing intentions must be an().
A. alternating red and yellow light
B. alternating white and yellow light
C. all-round white or yellow light
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[单项选择]When passing a hawser to the dock you would first use what line().
A. Gantline
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[单项选择]The passing of a low pressure system can be determined by periodically checking the().
A. Thermometer
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[单项选择]Before passing the Suez Canal the master has to fill out () given by the pilot.
A. the Pilotage list
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[单项选择]Advection fog may be formed by cold air passing over a().
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B. radiation fog
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