fix

teachcloud-mark/src/main/java/com/qmth/teachcloud/mark/service/impl/ScanOmrTaskServiceImpl.java

@@ -162,7 +162,7 @@ public class ScanOmrTaskServiceImpl extends ServiceImpl<ScanOmrTaskMapper, ScanO
                         String result = pageEntity.getQuestion().getResult().get(i);
                         MarkQuestion question = questionList.get(i);
                         //单选题若开启配置，仅有一个选项的不参与识别对照
-                        String answer = result.replaceAll("\\?","");
+                        String answer = result.replace("?","");
                         if (question.getQuestionType().equals(QuestionType.SINGLE.getValue()) && enableObjectiveOmr && answer.length()==1){
                             continue;
                         }