1、
2、
With reference to above test results, which gas os the most unreactive?
关于上述测试结果, 供气骨最不起化学反应? 解释您的答案.
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3、
Argon is unreactive, so that it does not react with the metal filament even when hot.
氩是不活跃的, 所以即使高温,它也不会与金属丝产生反应.
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