18.如图某同学做乙醇氧化实验时将螺旋状铜丝先放到a点处加热然后再移到b点�现铜丝在火焰的ab两点时现象明显不同请写出ab两点的 Template




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tomski18.如图某同学做乙醇氧化实验时将螺旋状铜丝先放到a点处加热然后再移到b点�现铜丝在火焰的ab两点时现象明显不同请写出ab两点的 coloring