问题详情
老人无线定位求助系统有基于RFID技术、基于Zigbee、基于GPS技术等不同的实现方式。
A.
beidou
B.
GPS
C.
Zigbee
D.
RFID
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2 Would you please ( ) the toys up separately ?
3 He built up a reputation as a ( ) businessman .
4 There is no ( ) treatment of this disease .
5 some rooms are ( ) to the doctors who are at the virus - control front line .
6 The salesman finally managed to ( ) a copy of the report .
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A.mol﹒dm-3
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