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液态金属密封 liquid metal seal
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更多 “液态金属密封 liquid metal seal” 相关考题
考题
A fire starting by spontaneous combustion can be expected in which condition? ______.A.Paints, varnish, or other liquid flammables are stowed in a dry stores lockerB.Inert cargoes such as pig iron are loaded in a wet conditionC.Oily rags are stowed in a metal pailD.Clean mattresses are stored in contact with an electric light bulb
考题
单选题To function properly, oil control rings used on a diesel engine piston must distribute sufficient oil to all parts of the cylinder wall and must also（）.A
prevent any lubricant from reachingB
prevent excessive lubrication from reaching the combustion spaceC
Provide metal-to-metal contact to seal the cylinder against blow-byD
assure a positive means of scraping carbon accumulation from the cylinder
考题
单选题Factor influencing the position of the interface between the liquid seal and the oil in a purifier is （）.A
throughputB
back pressureC
gravity discD
None of the above is wrong
考题
单选题What is an advantage of using foam in fire fighting?（）A
It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)B
Most foams can be used with dry chemicals to attack a fire by two methodsC
Foam is effective on combustible metal firesD
Foam can be made with seawater or fresh water
考题
单选题The interface between the liquid seal (water) and the oil should be positioned （） possible to the bowl periphery.A
as far asB
as soon asC
as close asD
as closer as
考题
单选题Which of the following influences the position of the interface between the liquid seal and the oil in a purifier?（）A
Height of the machineB
Temperature of the liquid sealC
Gravity discD
Bowl diameter
考题
单选题To minimize the formation of carbon deposits on fuel injection nozzles, you should （）A
avoid using liquid-cooled nozzles whenever possibleB
avoid low cooling water temperaturesC
avoid prolonged overloading of the engineD
make certain the gasket seal between the nozzle and cylinder head is tight
考题
单选题A fire starting by spontaneous combustion can be expected in which condition?（）.A
Paints, varnish, or other liquid flammables are stowed in a dry stores lockerB
Inert cargoes such as pig iron are loaded in a wet conditionC
Oily rags are stowed in a metal pailD
Clean mattresses are stored in contact with an electric light bulb
考题
单选题In a purifier, the interface between the liquid seal and the oil should be positioned as close as possible to （）.A
the outlet of oilB
the outlet of waterC
the bowl peripheryD
the center of bowl
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