....

src/modules/examwork/view/examStudent.vue

@@ -809,7 +809,7 @@
           :visible.sync="photoDialog"
           width="300px"
         >
-          <img :src="photo.url" alt="学生照片" height="100%" width="100%" />
+          <img :src="photo.url" height="100%" width="100%" />
         </el-dialog>
       </div>
     </div>

src/modules/examwork/view/student.vue

@@ -446,7 +446,7 @@
           width="300px"
           :center="true"
         >
-          <img :src="photo.url" alt="学生照片" height="100%" width="100%" />
+          <img :src="photo.url" height="100%" width="100%" />
         </el-dialog>
       </div>
     </div>