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【单选题】
下列不属于信息安全措施的是A.
不要轻易点击陌生网友发来的链接
B.
安装防火墙
C.
经常重装计算机系统
D.
经常更换资金账户密码
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反馈参考答案：
举一反三
【单选题】----Peter has good grades in all his subjects, but he never shows off. ----I agree. He is very ________.
A.
easy-going
B.
imaginative
C.
modest
D.
generous
【简答题】学者( )被称为现代管理理论的 “鼻祖”。
【多选题】TH cells are the primary regulators of T-cell– and B-cell– mediated responses . They________
A.
express the CD4 coreceptor molecule
B.
recognize foreign antigen complexed with MHC class II molecules on B cells, macrophages, or other APCs
C.
aid effector T lymphocytes in cell mediated immunity
D.
aid antigen-stimulated subsets of B lymphocytes to proliferate and differentiate toward antibody-producing cells
【单选题】Which cell has the shortest life( )
A.
spermatogonia
B.
primary spermatocyte
C.
secondary spermatocyte
D.
spermatid
E.
sperm
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