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

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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

单项选择题

A.2.35：1
B.4：3
C.1.33：1
D.1.78：1

单项选择题

A.2.66 ohms
B.Less than 1 ohm
C.4 ohms
D.12 ohms