通常在WLAN体系结构中，系统误码率应低于(60)。
-
(109)
- A．restored
- B．redisplayed
- C．stored
- D．executed
-
(107)
- A．incorporated
- B．filled
- C．stored
- D．filed
-
(108)
- A．color
- B．size
- C．design
- D．layout
-
Multipurpose Internet MaiI Extension (MIME) is a(71)document messaging standard in the Internet enviroment, with MIME, users can send(72)E-mail messages that include audio, video, graphices, and text to any other user of a TCP/IP network. Richtext information can also be(73)into messages. It defines the fonts, formats, and(74)features of a document so the document can be easily(75)on many different types of systems.
- A．complete
- B．compound
- C．simple
- D．efficient
-
(106)
- A．analog
- B．many
- C．multmedia
- D．digital
-
(104)
- A．point
- B．start
- C．length
- D．end
-
(103)
- A．charged
- B．fined
- C．free
- D．controlled
-
(102)
- A．computing
- B．incurious
- C．incurred
- D．incurred
-
Packet-switching wireless networks are preferable(66)when transmissions are(67)because of the way charges are(68)per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are(69)for the(70)of time they use the network.
- A．to
- B．for
- C．than
- D．only
-
(101)
- A．long
- B．short
- C．large
- D．small
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