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单项选择题A customer, Bob, needs to be able to access the Internet while traveling. Which of the following could Jill, a technician, recommend to Bob?（）

A、Cellular service with an adapter for Bob’s laptop.

B、USB adapter with 802.11n capabilities for maximum speeds.

C、A Bluetooth card to attach to multiple networks.

D、Enable Wi-Fi so Bob can connect to any open network.

  • A

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