单选题对保温层内有伸缩要求的燃气、热力管道,()不得妨碍管道的自由伸缩且不得损坏管道的防腐层。A支架B托架C绝热层D保护层
单选题
对保温层内有伸缩要求的燃气、热力管道,()不得妨碍管道的自由伸缩且不得损坏管道的防腐层。
A
支架
B
托架
C
绝热层
D
保护层
参考解析
解析:
暂无解析
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