It is rainy outside. Please take an umbrella ____________ you. [ ]
A. for
B. with
C. to
答案:B
下列哪些情况可引起肌钙蛋白升高
A.心肌梗死
B.肺栓塞
C.心肌炎
D.充血性心力衰竭
E.心绞痛
什么是曲率系数(cc)?