湖南省邵阳市武冈市2019届九年级上学期期末考试化学试卷
※题型：单选题※知识点：单选题※试题难度：较易<br>火箭推进器中盛有<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/30/2102184E6537F16C30821812B89B9D6A.png"><br>和<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/30/E947C2E36CD3B4692A2CC3A67A71F96C.png"><br>,发生反应的化学方程式:<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/30/349A374DC97FAA62E2F353CE3E6A63AA.png"><br>,其中R的化学式为( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/30/FFADA5F19AA4D4614F9C6B59C27E9FFB.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/30/B30EB7FE0B889B8486B80765DB2F74BB.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/30/B8412B99EF52FBFC82A6EBAC7C8B8D8E.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/30/C767696CB25FABAD622C476A2887E32E.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/2bacc7c2997c4f0095b3cd01ecdae18c/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/c6d25224e71e4879b36c52a4f2fa7cc0/3A82FA0DC0BD0533004DF3323577D659.png"><br><br>
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