单选题采用任何类型的压气机对气体进行压缩,所消耗的功都可用下式进行计算()Awe=q-ΔhBwe=ΔhCwe=q-ΔuDwe=-∫vdp
单选题
采用任何类型的压气机对气体进行压缩,所消耗的功都可用下式进行计算()
A
we=q-Δh
B
we=Δh
C
we=q-Δu
D
we=-∫vdp
参考解析
解析:
暂无解析
相关考题:
我们从特供商场购买食品,并加强对所购食品的检查A.We’ll buy all the food from supermarket and check all the food we buy carefullyB.We’ll buy all the food from foreign countries and check all the food we buy carefullyC.We’ll import all the food and check all the food we buy carefullyD.We’ll buy all the food from exclusive shops and check all the food we buy carefully
我们定点从绿色食品基地进货并进行特别检查A.We’ll buy commodity from designated places and conduct a special test of the purchaseB.Even though we buy food from designated green food bases, still we take a test of the purchaseC.We’ll buy goods from designated green food bases and conduct a special test of the purchaseD.The food we buy are from designated green bases and we still conduct a test of the purchase
The true value of life is not in_________, but in_________.() A.which we get, which we giveB.what we get, what we giveC.which do we get, which do we giveD.how we get, how we give
在和老师进行长时间的谈话后,我们终于找到了解决那个问题的办法。A.After we had a long conversation with our teacher, we find a method to solve the hard questonat last.B.After we had a long conversation with our teacher, we finally worked out a solution to theproblem.C.After a long talk with our teacher, we find a way
All of our nonverbal behaviors—the gestures we make, the way we sit, how mucheye contact we make, how fast or how loud we talk, and how close we stand—send strong messages.() 此题为判断题(对,错)。
We believe we must increase our export sales if we want to continue to grow, and we hope to increase exports to 40 % of production.
Neither ______ entirely on the agent when we buy insurance.A: we should dependB: should we dependC: we dependD: depend we
____ were all very tired, but none of ____ would stop to take a rest. A、We ; usB、Us ; weC、We ; ourD、We ; we
The sentence "But we pay for our sensitivity." in the third paragraph implies that______.A) we should pay a debt for, our feelingB) we have to be hurt when We feel somethingC) our pain is worth feelingD) when we feel pain, we are suffering it
Only when we hurried to the airport __________the fight was canceled.A.we foundB.did we findC.have we foundD.we have found
If we ask the class to listen and we ask the questions afterwards, we are helping them improve their listening skill indeed.()A对B错
(),we would have finished it then.A、If had we had better equipmentB、Had we had better equipmentC、Had had we better equipmentD、We had had better equipment
Not until this morning()your L/C. We can()make shipment as stipulated in the contract.A、we receive,notB、we have received,neverC、did we receive,hardlyD、had we received,certainly
单选题(),we would have finished it then.AIf had we had better equipmentBHad we had better equipmentCHad had we better equipmentDWe had had better equipment
单选题Environment makes ____ we are. If we damage the enviromnent,we'll endanger ourselves.AhowBwhoCwhatDbefore
单选题We don't need air conditioning, _____ .Anor can we afford itBneither can afford itCnor we can afford itDneither we can afford it
单选题—I’d like to know ______.—Maybe in the forest.Awhether we will go campingBwhere we will go campingCwhether will we go campingDwhere will we go camping
单选题What do we learn from the last paragraph?AIf we focus our attention on the thing, we might forget another.BMemory depends to a certain extent on the environment.CRepetition helps improve our memory.DIt we keep forgetting things, we’d better return to where we were.
单选题有效功We与所消耗燃料的热量Q1之比称为().A有效功率B有效耗油率C有效热效率