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【简答题】
按再生性可分为再生能源和非再生能源。再生能源是指可循环利用的能源,不会因人类的使用而减少,如太阳能、风能等。非再生能源是指用一点少一点的能源,如 、煤炭、铀等。
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【简答题】_________ is well known to the peasants,pests continue to eat crops, damage. A．It;causing B．As;caused C．It;caused D．As;causing
【简答题】什么叫 R 关节、 B 关节,什么叫 RPY 运动?
【简答题】Some plants get so hungry they eat flies, and even small frogs. What's more amazing is that these plants occur naturally (in special environments) in every state. In fact, they're found on every conti...
【简答题】Some plants get so hungry they eat flies, spiders, and even small frogs. What’s more amazing is that these plants occur naturally (in special environment) in every state. In fact, they’re found on eve...
【简答题】什么叫 RPY 运动?
【简答题】什么叫R手腕、 B手腕？ 什么叫RPY运动？
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