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  3. Bluetooth is changing small-area networking into a wireless and automatic connection with no need for user intervention and low

Bluetooth is changing small-area networking into a wireless and automatic connection with no need for user intervention and low

admin2009-04-23  48
问题 Bluetooth is changing small-area networking into a wireless and automatic connection with no need for user intervention and low need of transmission power.
Any two networks in piconets is unlikely to be on the same frequency simultaneously because each network is changing its______ thousands of times a second.
选项
答案frequency of operation/operational frequency
解析 本题定位词是piconets，从而锁定Piconets部分。该部分最后一段倒数第二句提到了同一时间两个网络的频率不可能相同的原因：each network is changing the frequency of its operation thousands of times a second，故本题应填入frequency of operation，也可将operation改为形容词形式修饰frequency，即填operational frequency。
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大学英语六级

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