单项选择题
A.32路 B.128路 C.256路 D.512路
A.低字节先送，高字节后送；字节内低位先送，高位后送 B.高字节先送，低字节后送；字节内低位先送，高位后送 C.高字节先送，低字节后送；字节内高位先送，低位后送 D.低字节先送，高字节后送；字节内高位先送，低位后送
A.0.20% B.0.50% C.1.00%
A.±0.2% B.±0.5% C.±1.5%
A.0.10% B.0.20% C.0.30%
A.±2ms B.±3ms C.±4hs
A.3S B.4S C.5S
A.1S B.2S C.3S
A.2S B.3S C.4S
A.4min B.5min C.6min
