A、<img src="http://s3.qsxt.info/exams/201906/9cdb3017-51da-4f51-a8a0-f50647b82a3e.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/7ca7bb21-4393-4ab3-9fc5-f084d00517cd.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/b0c8d8fc-2c70-4bd1-a5d1-bd0926ea66eb.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/225e92cc-db1f-466b-aa2d-456408f154c8.png"/>