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体外循环(extracorporeal circulation)
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Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily byA.heat conduction into the injected fuel oilB.heat conduction into the water jacket wallC.water circulation through passages in the holderD.fuel oil circulation through passages m the holder
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单选题For full information regarding the current circulation of the Indian Ocean,() Sailing Direction,Current Atlas,etc.A
watchB
look forC
seeD
regard
考题
单选题The choice of gifts tells us that the circulation managers ______.A
despised their readersB
wanted to educate their readersC
understood their readersD
enjoyed being powerful
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单选题() is the circulation and refreshing of the air in a space without necessarily a change of temperature.A
RefrigerationB
Air conditioningC
VentilationD
Heating
考题
单选题Antiseptics are used principally to().A
speed healingB
prevent infectionC
reduce inflammationD
increase blood circulation
考题
单选题In most pumps and pump motors overpacking the ball bearings full of grease will result in ()A
moisture emulsification of the bearing greaseB
insufficient circulation and overheating of the bearingC
proper grease circulation to cool the bearingD
sliding friction between balls and races
考题
单选题Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by ().A
heat conduction into the injected fuel oilB
heat conduction into the water jacket wallC
water circulation through passages in the holderD
fuel oil circulation through passages in the holder
考题
单选题() is the control of temperature and humidity in a space together with the circulation, filtering and refreshing of the air.A
RefrigerationB
Air conditioningC
VentilationD
Heating
考题
单选题Auxiliary boilers can be classified as()A
water-tube natural circulation boilersB
fire-tube boilersC
water-tube forced circulation boilersD
all of the above
考题
单选题The circulation around a low pressure center in the Northern Hemisphere is().A
counterclockwiseB
variableC
clockwiseD
anticyclonic
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