A．出现“红色”人工牙
B．塑料中有气泡
C．低<br /><img src="https://imgtest.ppkao.com/ExamPaperRes/2019/2/20/5886a9e0c93c445ba36532db340bc6a6/f2592f2c-50c4-4d71-b9c6-28d90c564b4a.jpg">
D．高<br /><img src="https://imgtest.ppkao.com/ExamPaperRes/2019/2/20/5886a9e0c93c445ba36532db340bc6a6/0a45f569-03dd-4e1a-8ddc-131bbe1e7765.jpg">
E．变形