一般来说,存在()之间的缺口是对多数国家经济成长状态的描述。
参考答案:实际GNP和潜在GNP
下面说法错误的是[ ]
A.0没有倒数
B.a是b的倒数,则b是a的倒数
C.假分数的倒数大于1
Which of the following people could tell the difference between a cultured pearl and an organic pearl
A.Scuba diver.
B.Fisherman.
C.Jeweler.
D.Clerk.