A、<img src="http://s3.qsxt.info/exams/201906/7d2a136a-62f5-4224-9b3b-02a7c82e7999.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/1229e87c-dfd8-43d3-a356-33765e9e7a1d.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/1f46fd3f-b8c7-4338-bfca-4a446d739f94.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/0a765552-fd99-4b9c-914a-ad010be35bda.png"/>