若抛物线y=x2-(2k+1)x+k2+2与x轴有两个交点,则整数k的最小值是______.
由题意得:(2k+1)2-4(k2+2)>0,解得k>74,故整数k的最小值是2.
Lee was faced with the of whether or not to return to his country after he got the doctor's degree in America
A.situation
B.dilemma
C.environm ent
D.circumstance
仅有肠外抗阿米巴作用的药物是:
A.喹碘方B.甲硝唑C.二氯尼特D.氯喹E.土霉素