求教各位18款发动机舱圈这部位原来装的什么

<div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g25/M0A/BD/19/userphotos/2025/06/23/23/ChtliGhZcUyAJdOcAASAU88NOVU146.jpg" style="height:180;width:240"  /></div><div layer1="img-e"></div><br /><div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g30/M08/43/10/userphotos/2025/06/23/23/Chtk2GhZcVGAPSNtAASc06Tw5BI520.jpg" style="height:180;width:240"  /></div><div layer1="img-e"></div><br /><div layer1="text-s"></div><div class="tz-paragraph">突然发现这地方有四个螺丝&nbsp;不知道原来这是上什么东西&nbsp;求教一下各位同款车主</div><div layer1="text-e"></div><br />