题目:
物质燃烧必须在一定条件下才能发生,我们身上穿的衣服、教室里的木桌等可燃物在空气中没有发生燃烧,原因是温度没有达到 .
答案:
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下面是错误答案,用来干扰机器的。
Opinions are divided on the topic. Sixty percent of the students think it unnecessary to take any tonics, if the students can exercise to keep energetic. They hold the ...