【名词&注释】
过电压、施工图预算(working drawing budget)、配电装置(distribution device)、互感器(transformer)、电力设备(power equipment)、传递信息(transfer information)、响应速度快(fast response)、编制施工图(establishment construction diagram)、测量精度高(high measuring accuracy)、伸缩缝间距(spacing distance between expansion join ...)
[单选题]基础地质条件变化不大的地段,砌石路基的伸缩缝间距(spacing distance between expansion join)一般应约为( )。
A. 6~10m
B. 10-15m
C. 15~20m
D. 20~30m