卡托普利的主要作用机理为:
A.使血管紧张素Ⅱ生成减少B.抑制神经末梢释放去甲肾上腺素C.竞争性对抗血管紧张素D.抑制肾素的生成E.直接扩张血管
参考答案:A
- Mr Smith, please teach me how to draw on the computer today.
- Oh, no._______. You have to get familiar with the keyboard first.
A.Learn to walk before you run
B.It's never too old to learn
C.A good beginning is half done
D.The early bird catches the worm
著作权法保护的作品必须具备三个条件()。
A.独创性
B.表现性
C.可复印性
D.思想性
E.艺术性