三七扩张血管、降血压的作用机制是()
A.阻断α受体
B.直接作用
C.阻止Ca2+内流
D.促NO释放
E.兴奋血管β2受体
参考答案:C
—Did you arrive here this morning?
—Yes,it was at nine o’clock we came here.
A.when
B.before
C.which
D.that
与特应性体质有关的疾病是()
A.变应性鼻炎
B.鼻中隔偏曲
C.急性鼻旁窦炎
D.慢性鼻旁窦炎
E.鼻旁窦囊肿