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发表于:2021-01-02
问题详情:A young man, while traveling through a desert, came across a spring of clear water. 33water was sweet. He filled his leather container so ...
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发表于:2021-09-13
问题详情: —Wasshebadlyhurt?—Yes,eachtimeshemovedherleg,sheacry. A.brokeout B.tookout C.letout D.keptout【回答】C知识点:词组短语题型...
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发表于:2021-01-22
问题详情:已知三棱锥S―ABC的各顶点都在一个半径为r的球面上,球心O在AB上,SO⊥底面ABC,AC=r。则球的体积与三棱锥体积之比是 。【回答】解析:由题意,知 OA=OB=OS=r,...