A、<img src="http://s3.qsxt.info/exams/201906/6ba155cf-7791-40e1-94e6-e7d5d3b21194.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/c809dd04-d328-4f17-b1de-ef890685656a.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/6e2a0190-1315-4c80-b709-512cc34d8f3a.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/1cbaa177-6a10-4422-a21f-d6022ca1c85d.png"/>