仪表五阀组型号比较多,在选型时,接口形式、尺寸是关键,还要考虑材质、()等。A、压力 发布时间:2020-01-21 12:04 │ 来源:www.tikuol.com 题型:单项选择题 问题: 仪表五阀组型号比较多,在选型时,接口形式、尺寸是关键,还要考虑材质、()等。A、压力B、介质腐蚀性C、介质密度D、介质流量
题型:单项选择题 老师让小雨策划以“珍爱生命”为主题的班会。请你从下列选项中为小雨选出适合该主题的观点[ ]①永不放弃生的希望②人的生命是有价值的③肯定生命,尊重生命④延伸生命的价值A.②④B.①③C.①②③D.①②③④ 查看答案
题型:单项选择题 It is the first time that the local education authority ________ such strict requirements on going-to-school time for primary and middle school students. [ ]A. makes B. has made C. had made D. made 查看答案