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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  25
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 或 operational frequency
解析 本题定位信息是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 或将 operation 改成形容词修饰frequency，即也可填operational frequency。
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