长期使用利尿药的降压机理主要是:
A.增加血浆肾素活性B.排Na+利尿,降低血容量C.减少小动脉壁细胞内Na+D.抑制醛固酮分泌E.降低血浆肾素活性
参考答案:C
单词拼写。
1. The news quite ______ (使心烦意乱) him.
2. She devoted herself ______ (完全地) to her research.
3. He wore a long and ______ (宽松的) coat.
4. It is beyond my p ______ to help you.
5. She c ______ in the exam by looking at my paper yesterday.
6. Let's have some sports o______ instead of staying indoors on such a fine day.
六氟化硫介质,具有优越的()性能。
A.绝缘;
B.灭弧;
C.绝缘和灭弧;
D.冷却。