仅有零解,则k( )A.k=9B.k不等于-1C.k不等于-1且k不等于9D.k=-1或k=9 仅有零解,则k( )A、k=9B、k不等于-1C、k不等于-1且k不等于9D、k=-1或k=9 发布时间:2025-06-24 18:56:12