某水泵的扬程很高,但流量不大,此水泵属()。A.往复泵 B.离心泵 C.轴流泵 D. 发布时间:2017-07-30 02:48 │ 来源:www.tikuol.com 题型:单项选择题 问题: 某水泵的扬程很高,但流量不大,此水泵属()。A.往复泵B.离心泵C.轴流泵D.混流泵
题型:单项选择题 There was a(n) __________ moment when the plane suddenly dropped.A.anxiousB.worriedC.secureD.exciting 查看答案