A、<img src="http://s3.qsxt.info/exams/201906/abf3aaea-57a1-4b66-87df-0e5a9b546ba2.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/bec8550b-5bdc-4eaa-86d0-cab886cf5ef7.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/b8e94328-0df2-4359-ad7c-b979dcfada95.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/f1e9ad1f-bffd-4d95-a511-c66f16990944.png"/>
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