单项选择题
A.C1与C2 B.C3与C4 C.C5与C6 D.C7与C8
A.1(Z) B.2(Z) C.X1(Z) D.X2(Z)
A.ZIN(B)与GND B.XIN(B)与GND C.ZIN(Z)与GND D.XIN(Z)与GND
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