A Bluetooth connection still uses unsightly cables.
查看答案
A Bluetooth connection has a lot of advantages.
A. 对
B. 错
Bluetooth consumes less power.
A. 对
B. 错
Bluetooth can connect your car’s GPS system, your cell phone, your computer and etc., without any cables.
A. 对
B. 错
The networking standard works at two levels: the physical level and the protocol level.
A. 对
B. 错
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