【单选题】【消耗次数:1】
堤坝内部涵管断裂,经渗透水土流失而形成的险情叫什么?:。
A管涌
B渗水
C漏洞
D跌窝
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相关题目
【单选题】 堤坝内部涵管断裂,经渗透水土流失而形成()。
①  A渗水
②  B跌窝
③  C裂缝
④  D滑坡
【多选题】 水土流失的类型包括():。
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②  B.风力侵蚀
③  C.重力侵蚀
④  D.冻融侵蚀
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①  正确
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【单选题】 当堤坝临水坡出现漏洞口多而小,且范围又较大的险情时,宜采用的抢护方法是()
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