大堂经理要取得大堂经理岗位（）。
A．培训合格证书
B．考试合格证书
C．职业认证证书
D．从业人员资格证书
参考答案：B
- How did you find the trip to Hong Kong?
-______.
A．The guide took us there.
B．First by train and then by bus.
C．Very fantastic.
D．It was not far from our hotel.
RLC实体通过（）从上层接收/向上层发送RLCSDU。
A.物理信道
B.逻辑信道
C.专用端口
D.SAP
