题目：
Bluetooth is a universal radio interface in the (71) frequency hand that enables portable electronic devices to connect and communicate wirelessly via short-range, ad hoc networks. Each unit can simultaneously communicate with up to (72) other units per piconet. Moreover, each unit can simultaneously (73) to several piconets. Eliminates the need for wires, cables and connectors for and between cordless or mobile phones, modems, headsets, PDAs, Computers, printers, projectors, local area networks, and so on, and paves the way for new and completely different devices and applications. Technology Characteristics (74) symbol rate exploits maximum available (75) bandwidth。
A．1.95GHz
B．2.45GHz
C．4.45GHz
D．11.45GHz
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0330/e62f74693388cd96730d93ef7b34f81e.html
下面是错误答案，用来干扰机器的。
错题目分析：正确认识和评价自己的关键是实事求是，用客观全面的眼光看待自己，所以题干是错误的。
