问题 问答题

某C20混凝土施工配合比为:

水:139kg/m3水泥:385kg/m3

砂:588kg/m3石:1328kg/m3拟省去水泥配零工作量,根据每罐配三袋水泥(150kg)计,相应地用水量和骨料用量是多少

答案

参考答案:

按水泥用量比例计,每罐混凝土量为:

故用水量:139×0.39=54kg

砂:588×0.39=229kg,

石:1328×0.39=518kg

写作题

假如你是Jay,你的好友Jack因两次考试成绩不理想而烦恼, 发来e-mail向你倾诉。请根据下列内容写一封e-mail作为答复。

1.不必沮丧,认真分析(analyze)失败原因。

2.增强自信心,避免犯同样的错误。

3.失败是成功之母,只要努力而不放弃,迟早会成功的。

要求:1.适当增加细节2.不要逐字翻译。3. 字数120左右。

Dear Jack,

I’ve received your e-mail and know that you are in a bad mood now.                                                                                       

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

填空题