下列物质晶体中,属于分子晶体的是() A . SiO 2 B . PH 3 C . SO 2 D .

下列物质晶体中,属于分子晶体的是() A . SiO 2 B . PH 3 C . SO 2 D . BeCh E . CaO

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1 . 对于静定多跨梁,计算次序与构造次序相同。对 错

1 . 对于静定多跨梁,计算次序与构造次序相同。对 错

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4【判断题】We confrtact a very competitive match.我的答案:√

4【判断题】We confrtact a very competitive match.我的答案:√

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5【判断题】The sport that is most popular in most parts

5【判断题】The sport that is most popular in most parts of the world.我的答案:√

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