【简答题】Somebody says ,‘‘Time is money.” But I think time is important than money. Why do I think so? Because when money is over, we can get it back. But when time is it’ll never .That’s we shouldn’t waste ti...
【单选题】For young children,getting dressed is a complicated business.
【简答题】John works in the London Home for Lost Dogs. When dogs get lost in London, policemen and other people bring them to John. When somebody loses his dog he comes to the Dogs' Home, and usually the dog ...
【多选题】对于朗肯循环,提高初压________。
【多选题】对于朗肯循环,提高初压 ________ 。
【单选题】The naughty boy has cried wolf time and again. Hardly ______ believes him when he says he really is in trouble.
【多选题】对于朗肯循环,提高初压________。
【多选题】关于再热循环,以下说法正确的是( )。
A.
再热循环的主要目的是提高乏汽干度,以便在初温限制下采用更高的初压力,以提高循环热效率
B.
一次再热循环系统与朗肯循环系统相比,增加了一个再热器和一个汽轮机