fengyanzhong 发表于 2017-8-21 14:42 下午第五题，中性点位于粉质黏土层，是不是应该理解为粉质黏土层顶呀？后面那个为安全计，取中风化岩层顶面 ...
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手机版|小黑屋|第一证书
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