备用泵预热时轴承箱、泵座、端面密封的冷却水要全部打开,以保护轴和轴承。() 发布时间:2019-10-18 19:39 │ 来源:www.tikuol.com 题型:判断题 问题: 备用泵预热时轴承箱、泵座、端面密封的冷却水要全部打开,以保护轴和轴承。()
题型:判断题 — Got any information about High School Examination?— Well, I was trying to, but found _____. [ ]A. one B. no one C. none D. some 查看答案