A、<img src="http://s3.qsxt.info/exams/201906/b8d6c92c-9d8c-4b2b-b582-f598f1603582.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/8f55d7ba-0468-4279-aa9c-88ff226b34a5.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/9cd82a35-32c0-4abf-86ac-a25d2152eb02.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/93fc2d6d-def3-470a-9a0e-8882c4376a2d.png"/>