单选题:血清与血浆的主要不同点是前者不含(  )

题目内容:
血清与血浆的主要不同点是前者不含(  ) A.钙离子
B.球蛋白
C.白蛋白
D.凝集素
E.纤维蛋白原
参考答案:
答案解析:

I waited for him half an hour, but he never ________.

I waited for him half an hour, but he never ________.A.turned in B.turned down C

查看答案

人工地增加离体神经纤维浸浴液中的K+浓度,则该神经纤维静息电位的绝对值和动作电位的幅度将(  )

人工地增加离体神经纤维浸浴液中的K+浓度,则该神经纤维静息电位的绝对值和动作电位的幅度将(  )A.均增大 B.均减小 C.前者增大后者减小 D.前者减小后者增

查看答案

Creating so much confusion, Mason realized he had better mak

Creating so much confusion, Mason realized he had better make ________ what he w

查看答案

It can be concluded from the passage that ________.

It can be concluded from the passage that ________.A.people should avoid doing i

查看答案

Professor Smith discovered that ________.

Professor Smith discovered that ________.A.certain patterns can be identified in

查看答案