题目: 砂子过粗或过细对混凝土拌和物和易性有什么不利影响? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0418/a372fae9656a0b19707b534f9f32dc61.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:选择题 —Excuse me. Do you have a table for two? —I’m sorry, ______ there aren’t any seats now. Would you mind waiting a while?A.butB.andC.orD.so 查看答案