תɲԼƻ
1.ָתĿ
ҪתΪͼѡ˵->תΪ->ȫתѡֻǽijһضתΪԣѡиѡ˵->תΪԡ->תѡѡͼʾתԻ
2.ѡתʽ
תѡתʽͼʾ
ڡתԻѡʺϵתʽһťֹת棬ͼʾ
3.ֹת
ѡҪĵĿȻϷİťɽǰĿתΪ⡢ԡԲ衢߽֮ӲԼƻɾ ֹתʱϣתԶӦ
ģӦȡԶӼѡ һ·ѡ棬ͼʾ
4.ѡ·
ͼпָǰתеIJԽ뵽ǸеIJУĿ·ĿıҲġťֱָеIJ⣬Ĭ£ǰת÷˲ԽӵSubject֮£ɰťʼתͼʾ
ת֮QCеġԼƻťлԼƻģ顣ԿתõIJԼƻͼʾ