1.Which option represents best practices for underground conduit installation?
1.以下哪项代表地下管道安装的最佳做法？
2.What tool is typically used to run irrigation lines beneath an existing concrete walkway?
2.通常使用哪种工具在现有混凝土人行道下方铺设灌溉管线？
3.In irrigation systems, what is purple pipe designated for?
3.灌溉系统中，紫色管道代表什么用途？
4.What method is used to join PVC pipes together?
4.PVC 管通常采用什么方式进行连接？
5.What benefit does a pressure regulator provide in a drip irrigation system?
5.滴灌系统中，压力调节器的作用是什么？
6.Why are emitters commonly used in landscaping irrigation?
6.园林灌溉中为何普遍使用滴头？
7.Which sprinkler is best suited for irrigating low-growing shrubs?
7.哪种喷头最适合灌溉低矮灌木？
8.How deep should low-voltage landscape wiring be buried?
8.低压园林照明电线应埋多深？
9.When planning a residential sprinkler system, what should be evaluated first?
9.规划住宅喷灌系统时，首先应评估什么？
10.In irrigation systems, ball and gate valves are typically used to:
10.灌溉系统中，球阀和闸阀通常用于：
