单选题在驾驶台遥控主机时，当把车钟手柄从全速正车一下推向全速倒车，遥控系统首先进行的动作是（）。A停油B换向C打开主起动阀D脱开盘车机
单选题
在驾驶台遥控主机时，当把车钟手柄从全速正车一下推向全速倒车，遥控系统首先进行的动作是（）。
A
停油
B
换向
C
打开主起动阀
D
脱开盘车机
参考解析
解析：
暂无解析
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