在ISDN中，A/D转换这一过程在（）完成.
A.接入网
B.交换局
C.用户终端
参考答案：C
The problem should be dealt with by the government ________ ordinary people.
A．other than
B．rather than
C．more than
D．less than
餐饮业怎样确保经营食品的安全？
