单项选择题
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
Whichofthefollowingwouldbetheimpedanceofan8ohmanda4ohms...
单项选择题Which of the following would be the impedance of an 8 ohm and a 4 ohm speaker that are wired in parallel？（）
A.2.66 ohms B.Less than 1 ohm C.4 ohms D.12 ohms
Whichofthefollowingcancauseghostinginavideoimage？（）A.Be...
单项选择题Which of the following can cause ghosting in a video image？（）
A.Bent pin on an S-Video cable B.Mislabeled component cables C.Defective HDMI cable D.Improperly terminated coax cable
