中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.点燃下列混合气体时，可能发生爆炸的是
| A: CO和CO2 |
| B: O2和N2 |
| C: CO和O2 |
| D: H2和CO |
一次做对，真牛！
+5奖励规则>
- 提示1：54iG54K45piv5oCl5Ymn55qE54eD54On5Y+R55Sf5Zyo5pyJ6ZmQ55qE56m66Ze06YeM77yM5bCx5Lya5Zyo55+t5pe26Ze06YeM6IGa6ZuG5aSn6YeP55qE54Ot77yM5L2/5rCU5L2T55qE5L2T56ev6L+F6YCf6Iao6IOA6ICM5byV5Y+R54iG54K477yb
- 提示2：5Y+R55Sf54iG54K455qE5p2h5Lu25piv5Zyo5pyJ6ZmQ55qE56m66Ze05YaF44CB5Y+v54eD5rCU5L2T5oiW57KJ5bCY5LiO56m65rCU5oiW5rCn5rCU5re35ZCI44CB6L6+5Yiw54iG54K45p6B6ZmQ44CB6YGH5Yiw5piO54Gr77yO
- 答案：Qw==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.下列气体与空气混合后遇明火，可能发生爆炸的是
| A: 甲烷 |
| B: 氮气 |
| C: 氧气 |
| D: 二氧化碳 |
一次做对，真牛！
+5奖励规则>
- 提示1：54iG54K45piv5oCl5Ymn55qE54eD54On5Y+R55Sf5Zyo5pyJ6ZmQ55qE56m66Ze06YeM77yM5bCx5Lya5Zyo55+t5pe26Ze06YeM6IGa6ZuG5aSn6YeP55qE54Ot77yM5L2/5rCU5L2T55qE5L2T56ev6L+F6YCf6Iao6IOA6ICM5byV5Y+R54iG54K477yb
- 提示2：5Y+R55Sf54iG54K455qE5p2h5Lu25piv5Zyo5pyJ6ZmQ55qE56m66Ze05YaF44CB5Y+v54eD5rCU5L2T5oiW57KJ5bCY5LiO56m65rCU5oiW5rCn5rCU5re35ZCI44CB6L6+5Yiw54iG54K45p6B6ZmQ44CB6YGH5Yiw5piO54Gr77yO
- 答案：QQ==
QeOAgeeUsueDt+aYr+WPr+eHg+aAp+awlOS9k++8jOaVhUHlj6/og73lj5HnlJ/niIbngrjvvJs8YnI+QuOAgeawruawlOS4jeaYr+WPr+eHg+aAp+awlOS9k++8jOS4jeS4juawp+awlOS4jeWPjeW6lO+8jOaVhULkuI3lj6/og73lj5HnlJ/niIbngrjvvJs8YnI+Q+OAgeawp+awlOaYr+WKqeeHg+aAp+eahOawlOS9k++8jOS4juepuuawlOa3t+WQiOS4jeWPr+iDveWPkeeUn+eIhueCuO+8mzxicj5E44CB5LqM5rCn5YyW56Kz5LiN5piv5Y+v54eD5oCn5rCU5L2T77yM5LiN6IO95ZKM5rCn5rCU5Y+N5bqU77yM5LiN5Y+v6IO95Y+R55Sf54iG54K477ybPGJyPuaVhemAiUHvvI4=
本课配套习题挑战模式3/5
单选题
难度系数：
3.铁器生锈、燃放爆竹、森林起火，它们的共同点是
| A: 都发出强光 |
| B: 都有火焰生成 |
| C: 都放出热量 |
| D: 都生成二氧化碳 |
一次做对，真牛！
+5奖励规则>
- 提示1：6ZOB5Zmo55Sf6ZSI5bGe5LqO57yT5oWi5rCn5YyW77yM54eD5pS+54iG56u55piv5Ymn54OI55qE54eD54On5oiW6ICF54iG54K477yM5qOu5p6X6LW354Gr5piv54eD54On44CC
- 答案：Qw==
6ZOB5Zmo55Sf6ZSI55qE6L+H56iL5q+U6L6D57yT5oWi77yM5LiN6IO95Y+R5YWJ77ybPGJyPumTgeWZqOeUn+mUiOeahOi/h+eoi+S4reayoeacieeBq+eEsOS6p+eUn++8mzxicj7pk4HlmajnlJ/plIjnmoTov4fnqIvkuK3kuI3og73nlJ/miJDkuozmsKfljJbnorPvvJs8YnI+6ZOB5Zmo55Sf6ZSI5bGe5LqO57yT5oWi5rCn5YyW77yM54eD5pS+54iG56u55bGe5LqO5Ymn54OI5Zyw5rCn5YyW5Y+N5bqU77yM5qOu5p6X6LW354Gr5bGe5LqO5Ymn54OI5Zyw5rCn5YyW5Y+N5bqU77yM6L+Z5Lqb5Y+N5bqU6YO96IO95aSf5pS+5Ye654Ot6YeP77yOPGJyPuaVhemAie+8mkPvvI4=
本课配套习题挑战模式4/5
单选题
难度系数：
4.下列说法中不正确的是
| A: 蜡烛在氧气中燃烧是氧化反应 |
| B: 缓慢氧化可能引起自燃 |
| C: 常温下，不能与氧气发生反应的物质都不能燃烧 |
| D: 爆炸不一定都是燃烧引起的 |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u54eD54On55qE54m554K56L+b6KGM5YiG5p6Q77yO6YCa5bi45omA6K+055qE54eD54On5piv5oyH5Y+v54eD54mp5LiO5rCn5rCU5Y+R55Sf55qE5LiA56eN5Ymn54OI55qE5Y+R5YWJ44CB5pS+54Ot55qE5rCn5YyW5Y+N5bqU44CC
- 答案：Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.下列爆炸不是由化学变化引起的是
| A: 冬天里，供暖锅炉的爆炸 |
| B: 煤矿里，“瓦斯”气体的爆炸 |
| C: 面粉厂里，面粉粉尘的爆炸 |
| D: 节日里，烟花爆竹的爆炸 |
一次做对，真牛！
+5奖励规则>
- 提示1：5L6b5pqW6ZSF54KJ55qE54iG54K45piv55Sx5LqO5Y+X54Ot5LiN5Z2H5a+86Ie05bGA6YOo5Y6L5by66L+H6auY5byV6LW355qE44CC
- 答案：QQ==
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
