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N2 safety shut-off valve 1 tripped氮气安全截止阀2故障
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设有如下程序：main(){int n1,n2;scanf("%d",n2);while(n2!=0){ n1=n2%10;n2=n2/10;printf("%d",n1);}}程序运行后，如果从键盘上输入1298，则输出结果为【】。
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两样本均数比较时,在其他条件相同情况下,下列四种选择中,()时检验效能最大。
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The amount of LFG that may be loaded into a given tank is determined by ______．A.Checking the loading sheetB.Loading to within 1 percent of outageC.Loading to within 10 percent of the safety relief valve settingD.Filling to the maximum level indicated on the liquid level gaging device
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A cargo hose is marked with the ______．A.maximum working pressureB.bursting pressureC.safety relief valve settingD.maximum temperature
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初涂固化炉助燃空气压力低的英文翻译（） A、PRIME OVEN COMBUSTION AIR PRESS LOWB、PRIME OVIME COG SAFETY SHUT OFF VALVE ANTION TIME OUTC、PRIME OVERN COMBUSTION FAN NFB OFF
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多选题在研究某一问题中使用F检验法，如果在显著性水平α=0.05的水平下，统计量F大于临界值F0.95（n1，n2），则在α=0.01水平下，可能的结论有（ ）。AF＞F0.99（n1，n2）BF≤F0.99（n1，n2）CF0.99（n1，n2）＞F0.95（n1，n2）DF0.99（n1，n2）＜F0.95（n1，n2）EF=F0.99（n1，n2）
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单选题A carburetor is required to have a safety device called a(n)（）.A
pressure releaseB
backfire flame arrestorC
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单选题In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）A
The safety valve escape piping should be disconnected from the valve body and a blank insertedB
The boiler vent valves should be openedC
All hand-hole/manhole covers should be tightened up as much as possible to preclude any leaksD
All of the above
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单选题In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）A
The safety valve escape piping should be disconnected from the valve body and a blank insertedB
The boiler vent valves should be openedC
All handhole/manhole covers should be tightened up as much as possible to preclude any leaksD
All of the above
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单选题Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to（）.A
be fitted with a positive fuel shut-off valve located at the tankB
have a shut-off valve at the top of the tankC
have a gate valve easily accessible in the space where the tank is locatedD
have a drain cock at the lowest point in the fuel line
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单选题The amount of LFG that may be loaded into a given tank is determined by（）.A
checking the loading sheetB
loading to within 1 percent of outageC
loading to within 10 percent of the safety relief valve settingD
filling to the maximum level indicated on the liquid level gaging device
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单选题The safety valve should be （） in the presence of C/E and Surveyor.A
tightened upB
sealed upC
opened upD
unscrewed
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单选题（） supplies pilot air to control the cylinder air start valves.A
An air compressorB
An indicator cockC
An air distributorD
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单选题Valve cages are used on some large diesel engines to （）A
reduce wear on the valve stemB
permit the use of alloy valve seat materialsC
reduce heat transfer from the valve seatD
facilitate valve removal for servicing
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单选题In some type of two-stroke engines, besides some small holes for（）, starting valve, safety valve, indicator cock, and central opening in each cylinder cover for mounting the（）A
fuel valves；exhaust valveB
exhaust valves；inlet valveC
fuel valves；inlet valveD
exhaust valves；fuel valve
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