【多选题】【消耗次数:1】
全国的土壤侵蚀可划分为
A冰雪气候侵蚀带
B湿地气候侵蚀带
C干旱气候侵蚀带
D强度侵蚀
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相关题目
【多选题】 全球的土壤侵蚀可分为_______。
①  A.冰雪气候侵蚀带
②  B.湿润气候侵蚀带
③  C.干旱气候侵蚀带
④  D.赤道地带
【多选题】 土壤侵蚀类型有
①  A水力侵蚀类型
②  B风力侵蚀类型
③  C重力侵蚀类型
④  D混合侵蚀类型
【判断题】 单位时间单位面积内产生的土壤侵蚀量,称为土壤侵蚀速率,或称为土壤侵蚀模数
①  正确
②  错误
【多选题】 土壤侵蚀危害_______。
①  A.破坏土壤资源
②  B.土壤肥力和质量下降
③  C.生态环境恶化
④  D.人类资源缺稀
【多选题】 土壤侵蚀一般可分为_______。
①  A.水力侵蚀
②  B.重力侵蚀
③  C.冻融侵蚀
④  D.风力侵蚀
【判断题】 土壤侵蚀强度所指的是某种土壤侵蚀形式,在特定外营力种类作用和其所处环境条件不变的情况下,该种土壤侵蚀形式发生可能性的强度。
①  正确
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【单选题】 土壤侵蚀模数的量纲是_______。
①  A.m/km2·a
②  B.m/cm2·a
③  C.t/km2·a
④  D.t/m2·a
【判断题】 侵蚀作用下产生分离和破坏的物质量,称为土壤侵蚀量
①  正确
②  错误
【单选题】 发生在人类活动开始影响土壤侵蚀以后,人类活动增大了侵蚀的______并使其在原来的侵蚀基础上加速发展。
①  A 流速
②  B崩塌
③  C强度和速度
④  D 破坏
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②  B.中度风蚀
③  C.重度风蚀
④  D.非常严重风蚀
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①  as soon as
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【单选题】 13. Tom failed in the exam again ______ he wanted to pass it very much.
①  if
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①  either…or
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