导入数据包时，客观题答案默认为#，后续自行导入

stmms-web/src/main/java/cn/com/qmth/stmms/admin/exam/PaperController.java

@@ -995,6 +995,7 @@ public class PaperController extends BaseExamController {
                                 e.setGroupNumber(q.getGroupNumber());
                             } else {
                                 e.setObjective(true);
+                                e.setAnswer("#");
                             }
                             e.setPaperType("#");
                             e.setIntervalScore(q.getIntervalScore());