单项选择题
A.the subwoofer is at the wrong angle. B.the front and rear speakers are reversed. C.the polarity of the speakers are reversed. D.the angle of the speakers are incorrect.
WhichofthefollowingcablingwouldbeMOSTcommonlyusedwithdi...
单项选择题Which of the following cabling would be MOST commonly used with digital volume controls？（）
A.Unshielded twisted pair B.RJ-59 C.16/4 solid conductors D.Speaker Wire
Whichofthefollowingisthecorrectsignalflowforananalogmul...
单项选择题Which of the following is the correct signal flow for an analog multi-room audio system？（）
A.Source，Volume Control，Speaker，Amp B.Source，Amp，Volume Control，Speaker C.Amp，Source，Volume Control，Speaker D.Speaker，Amp，Volume Control，Source
WhichofthefollowingisthestandardaspectratioforHDTV？（）A....
单项选择题Which of the following is the standard aspect ratio for HDTV？（）
A.2.35：1 B.4：3 C.1.33：1 D.1.78：1
