中间

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<div class="box-item ys-a">1水资源模块</div>
<div class="box-item ys-b">2水灾害模块</div>
<div class="box-item ys-c">3水公共模块</div>

<div class="box-item ys-d">4水公共模块</div>
<div class="box-item ys-e">5水政务模块</div>
<div class="box-item ys-f">6水生态模块</div>

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