第10套
Ｂluetooth is a universal radio interface in the __(1)__frequency band that enables portable electronic devices __(2)__ connect and communicate __(3)__via short range,ad hoc net Works .Each unit can simultaneously communicate with up to__(4)__ other units per piconet.Moreover,each unit can simultaneously __(5) __to several piconets,Bluetooth technology which apart from Ericsson,has gained th support of Nokia,IBM,Toshiba,Intel and many other manufactures,eliminates ths 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。
(1) A.2.45GHZ B. 4.45GHZ C. 2.95GHZ D. 1.45GHZ
(2) A.in B.on C.to D. with
(3) A.narrowly B.wirelessly C.freely D.widely
(4) A.use B.sever C.host D. base
(5) A.relate B.add C.close D. belong
答案:1:A,2:C,3:B,4:B,5:D |
