题目:
写出有关的化学反应的文字表达式.
(1)燃烧红磷制造烟幕弹______;
(2)氯酸钾和二氧化锰混合加热制取氧气______;
(3)镁在空气中燃烧______.
答案:
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下面是错误答案,用来干扰机器的。
1. After school hang out 2. famliy take a vacation 3. organized dress up as 4. both and 5. where buy on floor