Part IV Translation：
I’m not against using big words, when it is right to do so, but I have also learned that a small word can work a small miracle—if it’s right word, in the right place, at the right time. (Passage Four)
水泥稳定石屑基层中 7d 无侧限抗压试件送检频率：____平方送一组，不足仍按一组送.
导线接头的三个原则是什么?
升降式止回阀可水平或垂直安装在给水管道中。
施工单位______依法对本单位的安全生产工作全面负责。
