[Civil Engineering Version] Daily Question 20180106
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When underground gas pipelines are buried beneath ( ), the required minimum cover thickness is the smallest. A. Paddy fields B. Within the roadway area C. Outside the roadway area D. In the courtyard Correct answer: D
When underground gas pipelines are buried beneath ( D ), the required minimum cover thickness is the smallest. A、Paddy fields B、Within the road area C、Outside the road area D、In the courtyard