A.10 V信号，ADC范围0-10 V B.10 V信号，ADC范围0-5 V C.1 V信号，ADC范围0-10 V D.5 V信号，ADC范围0-10 V
A.A B.B C.C D.D
A.hello world! B.HELLO WORLD! C.hello world1 D.hELLO wORLD!
A.0，5 B.0，7 C.10，5 D.0，6
A.15 B.0 C.16 D.1
