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【单选题】

This type of apparatus can produce more than 40,000 blood ______ a day.
A.examples

B.models
C.samples
D.specimen
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根据网考网移动考试中心的统计,该试题:

14%的考友选择了A选项

7%的考友选择了B选项

13%的考友选择了C选项

66%的考友选择了D选项

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