A.溴水                B.碘酒                 C.氯化钾              D.氯气

A.溴水               B.碘酒                  C.氯化钾                D.氯气

不能使湿润的碘化钾淀粉试纸变蓝色的物质是

A．氯化钾                                                      B．溴水

C．碘酒                                                         D．氯气