风湿病患者,心尖部听诊闻及舒张期隆隆样杂音,首先考虑A.三尖瓣狭窄 B.主动脉瓣狭窄

题型:单项选择题

问题:

风湿病患者,心尖部听诊闻及舒张期隆隆样杂音,首先考虑

A.三尖瓣狭窄

B.主动脉瓣狭窄

C.肺动脉瓣狭窄

D.二尖瓣狭窄

E.二尖瓣关闭不全

考点:心血管外科(医学高级)心血管外科3
题型:单项选择题

腹外疝最易嵌顿的是

A.脐疝
B.股疝
C.直疝
D.斜疝
E.切口疝

题型:单项选择题

目前普遍把脑缺血的超早期治疗时间窗定为()

A.1h

B.2h

C.4h

D.6h

E.8h

题型:单项选择题

下列地区,地壳厚度最大的是[ ]

A、华北平原

B、青藏高原

C、云贵高原

D、塔里木盆地

题型:单项选择题

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

Is rs=rx-2 ()
(1) r is an odd number
(2) x=s+2

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

题型:单项选择题

主要定位基准面限制的是()自由度。

A、两个旋转和一个移动

B、两个移动和一个旋转

C、三个旋转

D、三个移动

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