[名词解释] 抚养比

审计人员在进行分层时应注意哪些问题？ 信用评级 Ms Nancy didn’t mind at all（）to the ceremony． ["being not invited","not being invited","not inviting","not to be invited"] 社会功能残疾 应征入伍后，如何办理户口注销？ 抚养比