2. 医药卫生
  3. 正常人血中为A:20/1 B:1/20 C:15/1 D:1/15 E:2/1

正常人血中为A:20/1 B:1/20 C:15/1 D:1/15 E:2/1

admin2020-12-24  15
问题 正常人血中为
选项 A:20/1
B:1/20
C:15/1
D:1/15
E:2/1
答案A
解析
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