问题
单项选择题
聚乙烯燃气管道可敷设于( )位置,长期安全的使用。
A.车行道路下
B.建筑物下穿越
C.与其他管道同沟敷设
D.木材堆放场
答案
参考答案:A
聚乙烯燃气管道可敷设于( )位置,长期安全的使用。
A.车行道路下
B.建筑物下穿越
C.与其他管道同沟敷设
D.木材堆放场
参考答案:A
从方框中选择恰当的短语并用其正确的形式填空:
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