用来提高气体压力和克服内损失(流动和泄漏)所消耗的功率称为()。 发布时间:2019-09-29 16:24 │ 来源:www.tikuol.com 题型:填空题 问题: 用来提高气体压力和克服内损失(流动和泄漏)所消耗的功率称为()。
题型:填空题 Mother _____ her son and said: "You'd better put on your coat. It's cold outside." [ ]A. turned on B. turned down C. turned off D. turned to 查看答案