收缩压和舒张压之差为
A.K+外流B.Ca2+内流和K+外流C.Na+内流D.Ca2+缓慢内流E.Na+和Ca2+内流
参考答案:D
I have been keeping the portrait. I can see it every day,()as it always reminds me of my childhood in Paris.
A.since
B.where
C.as
D.if
高脂血症可表现为()、(),或两者兼有,称为()。