财政代理结算直接支付零余额账户可以有余额。
参考答案：错
—Have you finished reading Jane Eyre?
—No, I________ my homework all day yesterday.[ ]
A. was doing
B. would do
C. had done
D. do
在Gr接口中，SCCP层的上层是（）.
A、MAP
B、TCAP
C、BSSAP+
D、BSSAP
