下列有关窦房结的描述,不正确的是() A.是心脏正常窦性心律的起搏点 B.位于上腔静

题型:单项选择题

问题:

下列有关窦房结的描述,不正确的是()

A.是心脏正常窦性心律的起搏点

B.位于上腔静脉人口与右心房后壁的交界处

C.长10~20mm,宽2~3mm

D.冲动在P细胞形成后,通过T细胞传导至窦房结以外的心房组织

E.窦房结动脉起源于右冠状动脉者占40%,起源于左冠状动脉回旋支者占60%

考点:江苏住院医师内科Ⅰ阶段心血管内科心血管内科题库
题型:单项选择题

My name is Xue Yan. My home is in Shanchong, Changtai. Do you know where it is? It’s in Zhangzhou. It’s very nice and clean. There are many beautiful flowers and delicious strawberries(草莓) there. The air is very fresh and the trees are green.

Our house is in the middle of Shanchong village(村庄). Behind our house there is a big old tree. My grandfather tells me that the tree is very, very old. There are many birds in the tree. We call it a “bird tree”. Our house is near a mountain(山). There are a lot of animals on the mountain. After school, I often go there and pick some fruit(水果). It is very interesting.

根据短文内容,判断正(T)误(F)

小题1:Xue Yan is from Fujian.

小题2:Her parents are not mentioned(提到) in the passage(短文)。

小题3:Xue Yan’s house is behind the “bird tree”.

小题4:Xue Yan doesn’t like picking fruit on the mountain.

小题5:In Chinese, the word “pick” means “采,摘”

题型:单项选择题

慢性主动脉瓣关闭不全,最常见的病因是()

A.风湿性心脏病

B.先天性畸形

C.退行性心脏瓣膜病

D.感染性心内膜炎

E.结缔组织病

题型:单项选择题

正常二尖瓣开口面积为()。

A.4~6cm2

B.2~4cm2

C.3~4cm2

D.1~2cm2

E.6~8cm2

题型:单项选择题

某梁悬臂受力情况如下图所示,其B点处的弯矩数值为()。

A.1/2PL

B.1/4PL

C.1/8PLz

D.0

题型:单项选择题

风险控制管理措施在管理体系中主要是通过制定()等管理措施来实现。

A、事故分析

B、运行控制程序

C、应急方案

D、应急响应

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