氨基酸在等电点时
A. 不带负电荷
B. 在电场中不泳动
C. 带正电荷
D. 不带正电荷
E. 以上都正确
由副溶血性弧菌引起的中毒食物为
A. 海产品
B. 蔬菜
C. 淡水产品
D. 饼干
E. 面包
We can learn from the last paragraph that______.
A. it is necessary to obtain as much
B. people should make the best use of the information
C. we should realize the importance of accumulating information
D. it is of vital importance to acquire needed information efficiently
休克治疗是为了
A. 升高血压
B. 恢复血容量
C. 纠正酸中毒
D. 恢复心排出量
E. 恢复组织的血流灌注
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