B．y using(26), a 600M -byte music CD can be compressed to 50M bytes or less. It can be streamed(downloaded in chunks) so that you can begin listening to the opening bars while the(27)of the file arrives in the background. And, most important, the music files of this kind retain good listening(28) that earlier(29) schemes lacked. That(30) of features makes accessing and distributing music on the web practical for the first time.

A．JPG

B．MP3

C．MP4

D．VOD

[单选题]By using MP3，a 600M-byte music CD can be (70) to 50M bytes or less.It can be streamed(downloaded in chunks)so that you can begin listening to the opening bars while the (71) of the file arrives in the background．And，most important，MP3 music files ret

[单选题]B．y using MP3, a 600M-byte music CD can be (1) to 50M bytes or less. It can be streamed (downloaded in chunks) so that you can begin listening to the opening bars while the (2) of the life arrives in the background. And, most important, MP3 music fil

[单选题]B．y using MP3, a 600M-byte music CD can be(70)to 50M bytes or less. It can be streamed(downloaded in chunks)so that you can begin listening to the opening bars while the(71)of the file arrives in the background. And, most important, MP3 music files r

[单选题]在海拔600m处煮沸消毒需延长消毒时间（）A . 2minB . 4minC . 6minD . 8mi

[单选题]某隧道单洞长600m，按规范分类为（）。A.中隧道B.长隧道C.短隧道D.特长隧道

[单选题]某隧道单洞长600m，按规范分类为（）。A.中隧道B.长隧道C.短隧道D.特长隧道

[单选题]25． Who can join the music club?A． PetrusB． AngelaC． AlbertD． Angela and Albert

[单选题]LANs can be connected by using bridges，which operate in the (67) .(67) A．data-link layerB．Physical layerC．network layerD．transport layer

[单选题]LANs can be connected by using bridges, which operate in theA．physical layerB．data link layerC．network layerD．transport layer

[单选题]用干湿地面砂浆铺贴600m×600m石材楼面，灰缝宽2mm，石材损耗率2%。每100平方米需（　　）块。A.281.46B.281.57C.283.3