单选题Bitmap的可能长度为0，这个Bitmap第一位指示SN为（）ol4096的SDU是否被正确接收解调AFMS+0BFMS+1CFMS+2DFMS+3
单选题
Bitmap的可能长度为0，这个Bitmap第一位指示SN为（）ol4096的SDU是否被正确接收解调
A
FMS+0
B
FMS+1
C
FMS+2
D
FMS+3
参考解析
解析：
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