图纸会审与技术交底.在施工项目质量控制中属于（）阶段控制。 A.事中 B.事前 C. 发布时间：2018-09-24 06:17 │ 来源：www.tikuol.com 题型：单项选择题 问题： 图纸会审与技术交底.在施工项目质量控制中属于（）阶段控制。A.事中B.事前C.设计阶段D.事后
题型：单项选择题 阅读理解。 Do you have to carry a heavy bag to school? Does it make your back (背部) hurt? Well, students at a high school in Kansas (堪萨斯州), America, have a meeting with their city's mayor to complain (抱怨) about their heavy bags. They say their bags are giving them headaches, and making their necks (脖子) andbacks hurt. The mayor says he is very sorry. He says students may do more of their homework on theInternet (国际互联网) to give their backs a rest. 1. A heavy bag may make students . [ ]A. headache B. earache C. toothache D. A, B and C 2. Kansas is in . [ ]A. China B. America C. Australia D. Canada 3. The students talk about their heavy bags to . [ ]A. the mayor B. their parents C. their teachers D. their friends 4. "Mayor" in Chinese means . [ ]A. 校长 B. 队长 C. 市长 D. 省长 5. The mayor says . [ ]A. he has a headacheB. he wants the students to do more homework C. he is sorry D. he has to work hard 查看答案
题型：单项选择题 在实验室配制溶液时，常涉及以下过程：①计算②称量③溶解④装瓶存放．现欲配制50g5%氯化钠溶液，如果某学生配制的氯化钠溶液中溶质的质量分数小于5%，则可能造成误差的原因有（至少举出三点）：①_________；②_________；③_________． 查看答案