二尖瓣狭窄时,X线左前斜位表现可表现() A.左主支气管上抬 B.左心缘变直 C.右

题型:单项选择题

问题:

二尖瓣狭窄时,X线左前斜位表现可表现()

A.左主支气管上抬

B.左心缘变直

C.右心缘有双心房影

D.右心房增大

E.主动脉结缩小

考点:北京住院医师皮肤科Ⅰ阶段心血管内科心血管内科题库
题型:单项选择题


Directions:This section consists of three groups of pairs listed in two columns, A and B. You are to match the one marked 1), 2), 3),4) or 5) in Column A with the one marked a, b, c, d or e in Column B. One point is given to each pair you match.
1) ______ language acquisition device (LAD)
2) ______ stimulus and response
3) ______ the discourse theory
4) ______ acquisition and learning
5) ______ the input hypothesis
a) The former refers to the subconscious process leading to the development of "competence"; the latter refers to conscious study and knowledge of grammatical rules.
h) A sort of mechanism or device which contains the capacity to acquire one’ s first language.
c) It assumes that humans acquire language in only one way--by understanding messages, or by receiving "comprehensible input".
d) It believes there is little difference between the first language acquisition process and the process of second language acquisition--only through communication discourses.
e) The former serves to elicit behaviour; the latter is triggered by the former.

题型:单项选择题

呼吸时,氧气由肺泡进入血液的原因是(  )

A.肺泡内氧气浓度大于血液中氧气的浓度

B.肺泡内有氧气,血液中没有氧气

C.肋间肌和膈肌收缩产生的压力

D.肺泡收缩产生的压力

题型:单项选择题

下列有关“直接剪切试验”的叙述中,错误的有______。

A.依据试验方法的不同可分为快剪、固结快剪和慢剪
B.依据试验设备的不同可分为应力式和应变式
C.其中应变式较为常用,它是指按即定荷载步长将水平煎力分级施加在剪切盒上,使土样受剪
D.对于同一种黏质土,三种方法所得的抗剪强度指标有所不同

题型:单项选择题

职业教育要以分科课程为主。

题型:单项选择题

境内大中小型企业贷款专项统计制度中,行业分类按照国家统计局“国民经济行业分类”标准执行,其中“金融业”贷款是指()。

A.对金融机构发放的贷款

B.对同业的拆放

C.贴现和转贴现

更多题库