B2B服务注销必须由原网银()网点进行。
A、账户签约
B、渠道签约
C、产品签约
D、开户
参考答案:B
--- How did your students express their thanks to you on Teachers’ Day?
--- A gift, together with many flowers ______ sent to me by my students.
A.is
B.are
C.was
D.were
试述单位制在中国产生的原因、功能及其带来的后果。