实现跳汰选煤并将已分层的产品分别排出的设备叫跳汰机。
参考答案：对
Make sentences. 连词成句。
1. do eat you when breakfast
2. usually up at get I noon 12:00
3. 8:30 I morning do exercises at
4. about you what
5. go I sometimes shopping
6. week go next hiking together let us
3G加密是在RNS与手机之间进行的，加密算法由（）来通知RNC。
A.SGSN
B.GGSN
C.HLR
D.手机
