某混凝土的配合比为:水泥:砂:石子:水=1:1.35:3.0:0.44,其砂率为( 发布时间:2018-01-03 19:04 │ 来源:www.tikuol.com 题型:单项选择题 问题: 某混凝土的配合比为:水泥:砂:石子:水=1:1.35:3.0:0.44,其砂率为( )。A.32%B.31%C.30%D.35%
题型:单项选择题 Nothing could stop the boy from _____ to work in shanghai after graduation (毕业). [ ]A. to B. to go C. going D. went 查看答案