冠脉搭桥病人围术期的危险因素()
A．再次搭桥病人
B．心衰病史
C．合并瓣膜病变
D．糖尿病
E．高龄
参考答案：A, B, C, D, E
____ how much they pay, I am not interested in this kind of job. [ ]
A. In spite of
B. No matter
C. In place of
D. Even though
有一架天平，只有5g和35g砝码各一个，现在要把300克的盐分成三等份，最少需要用天平称几次？
