A、<img src="http://s3.qsxt.info/exams/201906/bc66b7a9-69bb-4ee0-bb03-17c699151ca2.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/fe271b84-6a54-45cd-80c4-d6815af47cd4.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/8d1872ea-044c-47ab-916b-b016d5e84068.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/1f20595a-1232-49ef-9f74-f8f683a71af7.png"/>