单项选择题
A.Contains four pair of wires of various gauge
B.Contains two wires in a red fireproof jacket
C.Contains four twisted pairs of wires
D.Contains eight wires within a thick jacket with a rip cord
单项选择题 RG-6coaxialcableistypicallyusedinallofthefollowingapplications：（）
单项选择题 Whichofthefollowingcommunicationmethodswillprovidethemaximumbandwidthforvideostreamingthroughamediaextender？（）
单项选择题 WhichofthefollowingvideooutputsfromamediaPCprovidetheBESTpicturequality，whenconnectingthemediaPCtoaprojector？（）