单选题:地下燃气管道与构筑物的水平间距无法满足安全距离时,应( )。 题目分类:市政公用工程 题目类型:单选题 查看权限:VIP 题目内容: 地下燃气管道与构筑物的水平间距无法满足安全距离时,应( )。 A.将管道设于管道沟或刚性套管内 B.采用管桥 C.埋高绝缘装置 D.采用加厚的无缝钢管 参考答案: 答案解析:
热力管道严密性试验一级管网稳压( )min内压力降不大于0.05MPa;二级管网稳压30min内压力降不大于( )M 热力管道严密性试验一级管网稳压( )min内压力降不大于0.05MPa;二级管网稳压30min内压力降不大于( )MPa为合格。A.60;0.03 B.45 分类:市政公用工程 题型:单选题 查看答案
The little girl _____ her cup a moment ago, but luckily it The little girl _____ her cup a moment ago, but luckily it wasn’t broken.A.drop 分类:市政公用工程 题型:单选题 查看答案
His parents wanted to know what he _____ at that time. His parents wanted to know what he _____ at that time.A.is doing B.was doing C 分类:市政公用工程 题型:单选题 查看答案
Hi, Mr. Smith. I didn’t know you were in New York. How long Hi, Mr. Smith. I didn’t know you were in New York. How long ____ here?A.have yo 分类:市政公用工程 题型:单选题 查看答案
----Let’s go fishing if it _____ this weekend.-----But nobo ----Let’s go fishing if it _____ this weekend.-----But nobody knows if it ____ 分类:市政公用工程 题型:单选题 查看答案