单项选择题
A.命令旅客让开 B.让旅客让路 C.不用打招呼 D.要先打招呼
A.1处 B.2处 C.3处 D.4处
A.GB/T10001.1、GB/T10001.2、GB/T10001.3 B.GB/T10001.1、GB/T10001.3、GB/T10001.5 C.GB/T10001.1、GB/T10001.3、GB/T10001.7 D.GB/T10001.1、GB/T10001.3、GB/T10001.10