<div layer1="text-s"></div><div class="tz-paragraph">麻烦各位帮忙看一下&nbsp;&nbsp;就手刹下面那个</div><div layer1="text-e"></div><br /><div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g7/M05/3C/C4/userphotos/2017/12/30/21/500_wKgHzlpHjxaAHR7NAAdE2pb0w3A116.jpg" style="height:1440px;width:1920px"  /></div><div layer1="img-e"></div><br /><div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g7/M06/3C/C4/userphotos/2017/12/30/21/500_wKgHzlpHjxaAS-e5AAfJtbYi4pU488.jpg" style="height:1440px;width:1920px"  /></div><div layer1="img-e"></div><br />

麻烦问一下仪表盘左上角那个黄色的A亮着什么意思？