I don't have so much money. It's too_________.[ ]
A. cheap
B. lot
C. expensive
D. much
答案:C
若(3x2-2x+1)(x+b)中不含x2项,求b的值。
AMI患者CK变化不正确的是()。
A.发病3~8小时即明显增高
B.峰值在10~36小时
C.3~4天恢复正常
D.发病8小时内CK不增高可排除AMI
E.病程中CK再次升高提示再梗死