SET优点之一是对支持智能卡做了很多特别规定，解决了智能卡与电子商务的结合，并且在SSL上成功的实现了这样的设计。
参考答案：错
He has lots of friend, only a few of ____ invited to his wedding.
A．whom
B．them
C．which
D．who
一个基层预算单位可以开设（）个零余额账户。
A.2
B.3
C.1
D.4
