單項(xiàng)選擇題

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

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

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