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發表於:2021-01-02
問題詳情: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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發表於:2021-01-22
問題詳情:已知三稜錐S―ABC的各頂點都在一個半徑為r的球面上,球心O在AB上,SO⊥底面ABC,AC=r。則球的體積與三稜錐體積之比是 。【回答】解析:由題意,知 OA=OB=OS=r,...
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發表於:2021-09-13
問題詳情: —Wasshebadlyhurt?—Yes,eachtimeshemovedherleg,sheacry. A.brokeout B.tookout C.letout D.keptout【回答】C知識點:詞組短語題型...