elective report cover

src/views/elective/report/index.vue

@@ -1,6 +1,7 @@
 <template>
   <div class="app-container fx-column fx-sta-cen">
     <div class="elective-report-container">
+      <el-image :src="require('@/assets/images/elective/elective_report_cover.png')"></el-image>
       <el-divider><h1>选科测评报告</h1></el-divider>
       <elective-test-reports></elective-test-reports>
       <el-divider><h1>选科大数据分析</h1></el-divider>