预应力混凝土结构中混凝土强度等级不应低于()。A、C25B、C30C、C35D、C4 发布时间:2017-09-04 01:28 │ 来源:www.tikuol.com 题型:单项选择题 问题: 预应力混凝土结构中混凝土强度等级不应低于()。A、C25B、C30C、C35D、C40
题型:单项选择题 The shop assistants there were not friendly to me because of ____ .A.I was badly dressedB.the clothes I was having onC.what I was wearingD.what I dressed 查看答案