A、<img src="http://s3.qsxt.info/exams/201906/27677de8-3d89-42f8-9e4f-3dbd6082f3fb.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/852db88d-eee9-45a6-9460-c32e5c1c6120.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/fb5e4648-a131-4e07-8885-12418929b360.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/16707335-dd9f-46cd-8de1-6787ba297fcc.png"/>