A.SRB:命中服务范围
B.DHB:命中全域名黑名单
C.WFM:请求的URL没有命中白名单
D.MHB:命中主域名黑名单
A.Voice domain for E-UTRAN
B.Voice First for E-UTRAN
C.Voice Prefer for E-UTRAN
D.Voice Call for E-UTRAN
A.alter database hz drop column tea_name
B.alter table hz drop column tea_name
C.alter table tea_name drop column hz
D.alter database tea_name drop column hz