在后张预应力筋张拉后,压浆过程中,及压浆后48h内,结构混凝土的温度不得低于( ) 发布时间:2018-06-24 07:50 │ 来源:www.tikuol.com 题型:单项选择题 问题: 在后张预应力筋张拉后,压浆过程中,及压浆后48h内,结构混凝土的温度不得低于( ),否则应采取保温措施。A.5℃B.10℃C.15℃D.20℃
题型:单项选择题 Unless _____ to speak, you should remain silent at the conference. [ ]A. invited B. inviting C. being invited D. having invited 查看答案
题型:单项选择题 –Don’t take pictures here, please. – ________. A.No wayB.Sorry, I won’t.C.Here you are.D.It’s a pleasure. 查看答案