A、<img src="http://s3.qsxt.info/exams/201906/78f30f73-0b6a-4a5f-8d41-5a5f72c07e30.png"/>

B、<img src="http://s3.qsxt.info/exams/201906/9f2810a8-4cf0-4f9d-9329-7c92a2a7d0c1.png"/>

C、<img src="http://s3.qsxt.info/exams/201906/a3ebf350-09e4-4761-9298-a8dde85ddfbc.png"/>

D、<img src="http://s3.qsxt.info/exams/201906/3644c125-0285-47ca-99a1-852031fcd5b7.png"/>