A、<img src="http://s3.qsxt.info/exams/201906/2c8a749d-19fe-4999-b92d-098bdf1f81a1.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/6a78daae-3efe-4d04-a4ca-101cd95f1689.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/30facc74-0497-43b9-92d7-5935725cdba7.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/988e5610-7f06-42dc-ba9d-7cad06d48cf2.png"/>