答案(点此获取答案解析)
\u22203,\u4e24\u76f4\u7ebf\u5e73\u884c\uff0c\u540c\u4f4d\u89d2\u76f8\u7b49,\u7b49\u91cf\u4ee3\u6362,DG,\u5185\u9519\u89d2\u76f8\u7b49\uff0c\u4e24\u76f4\u7ebf\u5e73\u884c,\u2220AGD,\u4e24\u76f4\u7ebf\u5e73\u884c\uff0c\u540c\u65c1\u5185\u89d2\