硝酸甘油使心肌耗氧明显减少的原因有
A.产生NO
B.心室舒张末压下降,心室容积减小
C.降低外周阻力
D.松驰血管平滑肌
E.心率加快
参考答案:A,B,C,D
I think the answer is right but I’m not ____ sure about it.
A.exactly
B.absolutely
C.particularly
D.eventually
在高原、雪地因反射的太阳光所致的眼外伤属于______
A.红外线损伤 B.紫外线损伤 C.γ射线损伤 D.X线损伤 E.热损伤