<style type="text/css"><![CDATA[
.kV220 {stroke:rgb(255,0,0);fill:none}
.kV22 {stroke:rgb(0,255,255);fill:none}
.kV110 {stroke:rgb(255,255,0);fill:none}
]]></style>
<g id="617">
<use x="0" y="0" width="28.0" height="36.5" xlink:href="#Disconnector:普通刀闸_0" id="GHB.220.6022_I" commid="GuiH_S.220.6022_I" class="kV22" style="stroke:red"/>
</g>
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用use,使用class,class="kV22",这是要改变kV22中写的颜色:stroke:rgb(0,255,255);
正确方法是在use中补写属性:style="stroke:red",即:
<use ... commid="GuiH_S.220.6022_I" class="kV22" style="stroke:red"/>
用别的写法都不行,包括:stroke="red"