题型:选择题 After the flood, the first thing the government did was to provide_____ for the homeless familie.[ ]A. accommodationB. qualificationC. occupationD. admission 查看答案
题型:选择题 用铂电极电解100mL HNO3与 AgNO3的混合液,通电一段时间后,两极均收集到2.24 L 气体(标准状况),则原混合液中Ag+的物质的量浓度为 ( )A.1mol/LB.2mol/LC.2.5mol/LD.3mol/L 查看答案