9.甲乙丙丁四位同学进行如下操作你认为正确的是 A.甲用冷水冷却加热过的试管b.乙将药品放在天平右盘的纸称量c.丙取用硫酸溶液时 Template




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tomski9.甲乙丙丁四位同学进行如下操作你认为正确的是 a.甲用冷水冷却加热过的试管b.乙将药品放在天平右盘的纸称量c.丙取用硫酸溶液时 coloring