每次试验成功的概率为p,则三次独立重复试验中至少失败一次的概率为( )。
A.( (1-3
B.( 1-p3
C.( 3(1-
D.( (1-3+p(1-2+p2(1-
参考答案:B
短期菲利普斯曲线存在的条件是工资不变。
According to INCOTERMS 2010, which of the following terms requires the seller to pay for the insurance( )
A.CFR
B.CPT
C.FOB
D.CIP