A、that first byte of the data part
B、the last byte of the data part
C、that first byte of the message head
D、the last byte of the message
喵查答案:that first byte of the data part
A、that first byte of the data part
B、the last byte of the data part
C、that first byte of the message head
D、the last byte of the message
喵查答案:that first byte of the data part