1.Where are soldering rules for copper pipe found?
1.铜管的焊接规则在哪里可以找到？
2.What is the minimum toilet seat height from the floor?
2.马桶座距地面的最低高度是多少？
3.For which application can PVC pipe be used?
3.PVC 管可用于哪些用途？
4.How many times should flexible duct be wrapped with tape?
4.软管应使用胶带缠绕多少层？
5.What tool unclogs sewer drains?
5.什么工具可以疏通下水道？
6.According to UPC code what’s the minimum bathroom vent size?
6.根据 UPC 代码，浴室通风口的最小尺寸是多少？
7.What should you do if a customer asks for a septic tank without a permit?
7.如果客户要求安装化粪池但未获许可，承包商应怎么做？
8.How to determine the number of roof vents needed?
8.如何确定所需的屋顶通风口数量？
9.What is the typical material used for plumbing vent systems?
9.管道排气系统常用的材料是什么？
10.What valve shuts off water to the entire building?
10.哪个阀门可以切断整栋建筑的水源？
