题目

 _____________ cease(终止) advertising, prices would be significantly reduced.   A. Were they to   B. Could they   C. If they    D. Would they 答案:A反应C(s)+H2O(g)→CO(g)+H2(g)在10L密闭容器中进行,1分钟后,水蒸气的物质的量减少了0.45mol,关于此反应的说法正确的是A. 用水蒸气表示的速率为0.45mol/(Lmin)B. 用氢气表示的速率为0.00075mol/(Ls)C. 缩小容器体积将减慢反应速率D. 加入更多的焦炭能加快反应速率
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