动物机体抗病毒感染免疫中,在消化道、呼吸道黏膜免疫中起主要作用的免疫分子是()。[2010年真题]
A. IGG
B. 干扰素
C. 趋化因子
D. 白介素-2
E. 分泌型IGA
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Why is Alexander Pope known as representative of the Enlightenment?
Based on the Moll Flanders, Jane Eyre, Pride and prejudice, and Tess of the D Urbervilles,
Charles Lamb wrote a series of miscellaneous essays, collected in 1823 as the______.
A. Tales from Shakespeare
B. Rosamund Gray
C. Dream Children
D. Essays of Elia
安全阀整定压力试验不得少于多少次,且每次都必须达到相应标准的合格要求。
A. 2次
B. 3次
C. 4次
D. 5次