bug fix

src/modules/paper/components/QuestionGroupStruct.vue

@@ -65,7 +65,7 @@
             </template>
           </el-table-column>
           <el-table-column
-            v-if="(!useDifficult && !useProperty) || USE_ONLY_DIFFICULT"
+            v-if="!useDifficult || USE_ONLY_DIFFICULT"
             label="数量"
             width="150"
           >