管线种类 | 给水管 | 排水管 | 燃气管 | 电力管 | 通讯管 | 热力管 |
给水管 |
| O | × | O | × | × |
排水管 | O |
| × | × | × | × |
燃气管 | × | × |
| √ | √ | √ |
电力管 | O | × | √ |
| √ | √ |
通讯管 | × | × | √ | √ |
| O |
热力管 | × | × | √ | √ | O |
|