以下哪一项不属于城市压力管线( )
A．给水管
B．排水管
C．煤气管
D．灰渣管
参考答案：B
用单词的正确形式填空。
1. Tomorrow I ___________ (invite) my cousin for supper.
2. I usually ___________ (skate) in winter.
3. It is a ___________ (sun) day.
4. There are ___________ (light) on the tree.
5. Yesterday I ___________ (go) to school by bus.
6. There are two ___________ (Christmas card) on the table.
室外埋地电缆一般情况下，其埋深不应小于( )m。
A．0.6
B．0.7
C．0.8
D．0.9
