水泵第二相似定律是确定两台工况相似水泵的()之间关系。A.流量 B.扬程 C.轴功率 发布时间:2017-06-28 07:54 │ 来源:www.tikuol.com 题型:单项选择题 问题: 水泵第二相似定律是确定两台工况相似水泵的()之间关系。A.流量B.扬程C.轴功率D.转速
题型:单项选择题 What’s special about David according to the speaker a. David always likes to amend the rules of the company. b. David never breaks any rule of the company. c. David often reminds the others of observing the company’s rules. d. David often challenges the rules of the company. 查看答案