diff --git a/src/views/projectFront/examSystem2/learningMaterial/learningMaterial.vue b/src/views/projectFront/examSystem2/learningMaterial/learningMaterial.vue
index 506b98b6..db86bfc0 100644
--- a/src/views/projectFront/examSystem2/learningMaterial/learningMaterial.vue
+++ b/src/views/projectFront/examSystem2/learningMaterial/learningMaterial.vue
@@ -35,19 +35,21 @@
                 </span>
               </template>
             </el-table-column>
-            <el-table-column prop="subjectName" align="center" width="180" label="课程封面">
+            <!-- <el-table-column prop="subjectName" align="center" width="180" label="课程封面">
               <template slot-scope="scope">
                 <span class="value" v-if="scope.row.coverImg && JSON.parse(scope.row.coverImg).length > 0"  
                   style="display: flex;justify-content:center;word-wrap: break-word;white-space: normal; flex-wrap: wrap">
                   <div v-for="(item,index) in JSON.parse(scope.row.coverImg)" :key="index" style="">
-                    <!-- <img :preview="item ? $store.state.FILEURL + item.url : ''"
-                        :src="item ? $store.state.FILEURL + item.url : ''" alt="" width="50px" height="50px" style="margin-right: 10px;"/> -->
+                    需要注释
+                    <img :preview="item ? $store.state.FILEURL + item.url : ''"
+                        :src="item ? $store.state.FILEURL + item.url : ''" alt="" width="50px" height="50px" style="margin-right: 10px;"/>
+                    需要注释
                     <img :preview="item.url ? item.url : ''"
                         :src="item.url ? item.url : ''" alt="" width="50px" height="50px" style="margin-right: 10px;cursor:pointer"/>
                   </div>
                 </span>
               </template>
-            </el-table-column>
+            </el-table-column> -->
             <el-table-column prop="remark" align="center" label="备注">
               <template slot-scope="scope">
                     <!-- <el-tooltip class="item" effect="dark" :content="scope.row.remark" placement="left">
@@ -58,10 +60,10 @@
             </el-table-column>
             <el-table-column width="240" label="操作" align="center">
               <template slot-scope="scope">
-                <el-button size="mini" type="text" style="color:#5886f6" icon="el-icon-edit" @click="editBefore(scope.row,'编辑课程')" >
+                <el-button size="medium" type="text" style="color:#5886f6" icon="el-icon-edit" @click="editBefore(scope.row,'编辑课程')" >
                   <span style="color:black">编辑</span>
                 </el-button>
-                <el-button size="mini" type="text" style="color:#ec4b52" class="delete-btn" icon="el-icon-delete" @click.native.stop="remove(scope.row) ">
+                <el-button size="medium" type="text" style="color:#ec4b52" class="delete-btn" icon="el-icon-delete" @click.native.stop="remove(scope.row) ">
                   <span style="color:black">删除</span>
                 </el-button>
               </template>
@@ -99,7 +101,7 @@
                   <div class="el-upload__text"><i style="font-size: 18px;" class="el-icon-upload"></i>将文件拖到此处，或<em>点击上传</em></div>
                 </el-upload>
               </el-form-item>
-              <el-form-item label="课程封面" prop="coverImg" 
+              <!-- <el-form-item label="课程封面" prop="coverImg" 
                 :rules="[{required:true,message:' ',trigger:['blur','change']}]">
                 <el-upload :action="$store.state.UPLOADURL" list-type="picture-card" name="files" :limit="1"
                 :on-remove="(file, fileList) => coverHandleRemove(file, fileList)"
@@ -109,7 +111,7 @@
                 >
                   <i slot="default" class="el-icon-plus"></i>
                 </el-upload>
-              </el-form-item>
+              </el-form-item> -->
               <el-form-item label="备注" prop="remark">
                 <el-input type="textarea" :autosize="{minRows: 2, maxRows: 5}" v-model="addCourseForm.remark"></el-input>
               </el-form-item>
@@ -317,7 +319,7 @@ export default {
     editBefore(item,title){
       this.title = title
       this.addCourseForm = JSON.parse(JSON.stringify(item))
-      this.coverFileList = JSON.parse(item.coverImg)
+      // this.coverFileList = JSON.parse(item.coverImg)
       this.materialFileList = JSON.parse(item.fileUrl)
       this.dialogVisible = true
     },
@@ -405,10 +407,10 @@ export default {
             this.$message.error('请上传视频文件')
             return
           }
-          if(!this.addCourseForm.coverImg){
-            this.$message.error('请上传课程封面')
-            return
-          }
+          // if(!this.addCourseForm.coverImg){
+          //   this.$message.error('请上传课程封面')
+          //   return
+          // }
           if(this.title === '新增课程'){
             addCourseApi(this.addCourseForm).then((res)=>{
               if (res.code == 200) {