题目内容
54.Which of the following uses a microchip in a tag to store information, and information is transmitted from the tag when the microchip is exposed to the correct frequency of radio waves?
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55.With RFID technologies, each individual piece of merchandise will have a unique ____.
49.Which of the following can be placed in the human body to store important information about a person, such as medical history, and can be GPS-enabled to offer a method of tracking?
50.Which of the following is a standard for transmitting information in the form of short-range radio waves over distances of up to 30 feet?
53.Which of the following refers to a wireless transmission technology developed primarily for mobile phones to support mobile commerce and other phone activities?
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