应用类型可清理

src/pages/takai/questionAnswer/info/index.tsx

@@ -416,6 +416,7 @@ const QuestionAnswerInfo: React.FC = () => {
                                 style={{ width: '300px', height: '48px' }}
                                 placeholder='请选应用类型'
                                 onChange={handleAppChange}
+                                allowClear={true}
                             >
                                 {
                                     appTypeList.map((item, index) => {