问题
单项选择题
接地沟的挖掘，沟的中心线与建筑物或构筑物的基础距离不宜小于( )。
A．1m
B．2m
C．3m
D．4m
答案
参考答案：B
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接地沟的挖掘，沟的中心线与建筑物或构筑物的基础距离不宜小于( )。
A．1m
B．2m
C．3m
D．4m
参考答案：B
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