如图所示x为一种纯净气体玻璃管a中盛放的�色固体可能由木炭粉氧化铜中的一种或几种组成根据需要加热时也可以用酒精喷灯.�若x为o2.a Template




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tomski如图所示x为一种纯净气体玻璃管a中盛放的�色固体可能由木炭粉氧化铜中的一种或几种组成根据需要加热时也可以用酒精喷灯.�若x为o2.a coloring