试题与答案

.下列排列顺序正确的是() ①热稳定性:H2O>HF>H2S②原子半径:Na>M

题型:选择题

题目:

.下列排列顺序正确的是(   )

①热稳定性:H2O>HF>H2S     ②原子半径:Na>Mg>O

③酸性:H3PO4>H2SO4>HClO4   ④结合质子能力:OH->CH3COO->Cl-

A.①③

B.②④

C.①④

D.②③

答案:

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参考答案:A解析:在Oracle产品中,Oracle WebAgent是用公用网关接口实现的过程化网关。

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(6)已知:双烯合成反应:

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提示:合成路线流程图示例如下

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