单项选择题
If the speakers in an installation are out of phase， this means that（）
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.
点击查看答案
相关考题
-
单项选择题
WhichofthefollowingcablingwouldbeMOSTcommonlyusedwithdigitalvolumecontrols？（）
A.Unshielded twisted pair
B.RJ-59
C.16/4 solid conductors
D.Speaker Wire -
单项选择题
Whichofthefollowingisthecorrectsignalflowforananalogmulti-roomaudiosystem？（）
A.Source，Volume Control，Speaker，Amp
B.Source，Amp，Volume Control，Speaker
C.Amp，Source，Volume Control，Speaker
D.Speaker，Amp，Volume Control，Source -
单项选择题
WhichofthefollowingisthestandardaspectratioforHDTV？（）
A.2.35：1
B.4：3
C.1.33：1
D.1.78：1
