问题
单项选择题
关于慢性肾衰竭时高血压的发生机制，正确的是（）
A.肾素-血管紧张素水平增高
B.血容量扩张
C.血容量及肾素-血管紧张素平衡失调
D.激肽系统的作用
E.交感神经兴奋性改变
答案
参考答案：C
解析：慢性肾衰竭时高血压的发生机制是容量负荷及肾素分泌增多。
搜题请搜索小程序“爱下问搜题”
关于慢性肾衰竭时高血压的发生机制，正确的是（）
A.肾素-血管紧张素水平增高
B.血容量扩张
C.血容量及肾素-血管紧张素平衡失调
D.激肽系统的作用
E.交感神经兴奋性改变
参考答案：C
解析：慢性肾衰竭时高血压的发生机制是容量负荷及肾素分泌增多。
| 在短文的空白处选择方框中词的适当形式填空，补全短文。 | |
1_____. They were very 2_____. Now everyone is mad about magic. We all want to know how to do a trick! Liu didn't go to any 3_____ school. He learned by 4_____. He worked hard at it. Now he is a great magician. When Liu was seven, he saw a coin trick in a big store. At that moment Liu 5_____ to learn magic. Liu practiced hard to 6_____ his skills. Then one day he was 7_____ to put on a show for his class. "I saw the 8_____ on everyone's face. It was cool. " Liu still 9_____ hard today. He may spend three years 10_____ on a new show. |