一般来说,中小型离心泵多采用()轴承。A、滚动 B、滑动 C、不好判断 发布时间:2020-05-22 05:24 │ 来源:www.tikuol.com 题型:单项选择题 问题: 一般来说,中小型离心泵多采用()轴承。A、滚动B、滑动C、不好判断
题型:单项选择题 Although microblog(微博) is becoming more and more popular, it doesn’t _____ all teenagers.A.take upB.appeal toC.stand forD.go through 查看答案