浮力式液位计分为恒浮力液位计和变浮力式液位计两种。
参考答案:对
除哪项外,以下均是血管紧张素Ⅱ的功能()。
A.直接使小动脉收缩
B.使交感神经发放冲动增加
C.刺激肾上腺皮质网状带,使醛固酮分泌增多
D.使静脉收缩,回心血流量增多
E.增加渴觉,导致饮水行为
根据句子意思,在空格中填写适当的单词,使句子完整、正确。
1. Do you have a driver's _______? Or you shouldn't be allowed to drive.
2. Could you _______ me with information about student exchange programs?
3. The light bulb was _______ by Edison.
4. These days, I hear strange _______ outside every night.
5. Listen! There's someone _______ at the window.
6. We all know China is a _______ country.
7. I'd like to give it to _______ research. I want to help more sick people.
8. You are _______ to finish your homework on time. Or the teacher will be angry.