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根据《UCP500》。在交易磋商中，当一方发盘，另一方作出有效的接受后，合同即告成立。
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Americans are much more likely than citizens of other nations to believe that they live in a meritocracy, i.e. Government by people selected according to merit. But this self-image is a fantasy: America actually stands out as a the advanced country in which it matters most who your parents were, the country in which those born on one of society’s lower rungs have the least chance of climbing to the top or even to the middle.And if you ask why America is more class-bound in practice than the rest of the Western world, a large part of the reason is that our government falls down on the job of creating equal opportunity.The failure starts early: in America, the holes in the social safety net mean that both low-income mothers and their children are all too likely to suffer from poor nutrition and receive inadequate health care. It continues once children reach school age, where they encounter a system in which the affluent send their kids to good, well-financed public schools or, if they choose, to private schools, while less-advantaged children get a far worse education.
如果合同和信用证中均未规定具体唛头，则填写发票时，“唛头”一栏可以空白不填。
在中华人民共和国境内履行的中外合资经营企业合同、中外合作勘探开发自然资源合同只能适用中华人民共和国法律。（ ）
swap(pt1,pt2) int*pt1，*pt2； int P； P=*pt1： +pt1=*pt2： *pt2=P： exchange(q1,q2,q3) int*ql,*q2,*q3; if(*ql＜*q2)swap(q1,q2)； if(*q1＜*q3)swap(q1,q3)； if(*q2＜*q3)swap(q2,q3)； main() int a,b,C,*p1,*p2,,p3； scanf(“%d，%d，%d\n”，&a,&b,&c)； p1=&a;p2=&b;p3=&c； exchange(p1,p2,p3); print(“\n%d，%d，%d\n”，*p1,*p2,*p3)； 当运行程序时，输入9，0，10，则屏幕结果为：
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