【单选题】【消耗次数：1】
装设接地线时，应（????）。??
①
先装导线端
②
先装中相
③
先装接地端，再装两边相?
参考答案：
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透水铺装应满足以下要求（ ）。
①
透水铺装对道路路基强度和稳定性的潜在风险较大时，可采用半透水铺装结构
②
土地透水能力有限时，应在透水铺装的透水基层内设置排水管或排水板
③
土地透水能力有限时，应在透水铺装的透水基层上设置排水管或排水板
④
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