若n为正整数,且x2n=7,则(3x3n)2-4(x2)2n的值为[ ]
A.833
B.2891
C.3283
D.1225
答案:B
—Who's the baby in the picture?
—_______.[ ]
A. He's I
B. He's me
C. It's I
D. It's me
从国际化程度不同区分,国际经营战略有()。
A.一国化战略
B.多国化战略
C.集中化战略
D.国际化战略
E.全球化战略