下列哪项不是免疫系统的正常生理功能本文来自() A.免疫防御 B.免疫监视 C.免疫

题型:单项选择题 A1型题

问题:

下列哪项不是免疫系统的正常生理功能本文来自()

A.免疫防御

B.免疫监视

C.免疫耐受

D.免疫调节

E.免疫损伤

考点:公卫执业医师2008年公卫执业医师历年真题精选(A1型题2)
题型:单项选择题 A1型题

蒜黄和韭黄是在缺乏光照的环境下培育的蔬菜,对形成这种现象的最好解释是[ ]

A.环境因素限制了基因的表达

B.两种均为基因突变

C.叶子中缺乏形成叶绿素的基因

D.黑暗中植物不进行光合作用

题型:单项选择题 A1型题

缺词填空(共10空;每空l分,计l0分)

根据短文内容和首字母提示,在下文空格处填入适当的词使短文完整。(每空一词)

At last, the mid-term exams are over. You’ve done the hard work, 小题1: you can’t relax. You have to prepare for the next exams. Do you hate exams? If you do, you’re not alone. Students in 小题2: countries hate them as well.

Luckily for them, British students have 小题3:  exams than Chinese students. And they 小题4:have them once a year. Every summer they take a test in each subject. Each test lasts about an hour. These exams don’t count for much. Even if a student does really 小题5: they still progress to the next year. When the results come out they are then placed in an end-of-year report. The report is sent to the child’s 小题6: . It describes how the student studied at school.

This report is private(私密的), so only the teacher, the student and his or her parents see it. This 小题7:  that the students don’t know how other students scored in the test. Some students choose to tell each other, but others keep it 小题8: .

Parents’ meetings are held t 小题9: a year, at the end of the winter term and then at the end of the summer term. Children go to meet their teachers 小题10: their parents and discuss their performance at school.

题型:单项选择题 A1型题

价值工程中的产品成本是指()

A.生产制造成本

B.使用成本

C.产品销售成本

D.产品寿命周期成本

题型:单项选择题 A1型题

通常情况下,下列商业银行资产的流动性自高至低排序正确的是()。(1)国债(2)同业借款(3)银行自有房产(4)可出售的贷款组合

A.(2)>(1)>(3)>(4)

B.(1)>(2)>(3)>(4)

C.(2)>(1)>(4)>(3)

D.(1)>(2)>(4)>(3)

题型:单项选择题 A1型题

域表达式ab|R(ab)∧R(ba)转换成为等价的关系代数表达式,所列出的式子中 (47) 是不正确的。SQL中集合成员资格的比较操作“元组NOT IN(集合)”中的“NOT IN”与 (48) 操作符等价。SQL中涉及属性AGE是甭是空值的比较操作,写法 (49) 是错误的。类似于“工资在800至5000之间”这种约束,是属于DBS的 (50) 功能。

设关系模式Q是3NF模式,那么, (51) 这种提法是不正确的。

(48)处填()。

A.<>SOME

B.=SOME

C.<>ALL

D.=ALL

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