题型:问答题 简答题 My job was to wash bottles, which would then be filled with wine, or ______the filled bottles in boxes. [ ]A. to put B. putting C. having put D. being put 查看答案
题型:问答题 简答题 某无色溶液能与铝片作用生成氢气,则溶液中可能大量共存的离子组是( )A.H+、Mg2+、Cu2+、Cl-B.Na+、K+、NO3-、H+C.Cl-、Ba2+、NO3-、OH-D.OH-、HCO3-、Cl-、Mg2+ 查看答案