题目内容

RFID中负载调制技术不包括（）。

A. 电容负载调制
B. 电阻负载调制
C. 电感负载调制

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RFID系统中决定整个系统的工作频率和工作距离是（）。

A. 读写器
B. 电子标签
C. 上位机
D. 接口

Logistics is sometimes described as achieving the “5R” theory, they are right quantity, quality, place, time and ( ).

A. volume
B. location
C. price
D. methods

The word “logistics” was first used in ( ) field.

A. military
B. business
C. industrial
D. commercial

The term “logistics” is now used more commonly in ( ) field.

A. military
B. business
C. industrial
D. commercial