冠状动脉的分支中，下述别名为猝死动脉的是（） A.左室后支 B._爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题 A1/A2型题

冠状动脉的分支中，下述别名为猝死动脉的是（）

A.左室后支

B.后室间支

C.前室间支

D.旋支

E.窦房结支

答案

参考答案：C

解析：因50%以上的心肌梗死是前室间支闭塞所致，故常将该支称为猝死动脉。

阅读理解

判断对错，对的在括号里画“√”，错的画“×”。

( ) 1. Li Ming usually helps his mother.

( ) 2. Jenny always wears dresses.

( ) 3. Steven sometimes walks to school.

( ) 4. Danny never wears dresses.

( ) 5. Li Ming never walks to school.

( ) 6. Jenny never does her homework.

( ) 7. Steven sometimes helps his mother.

( ) 8. Danny always does his homework.

问答题简答题

氢气纯度指示与输入电流的对应关系是什么？