【单选题】我国于1983年10月5日加入世界旅游组织,成为第( )个成员国。
【单选题】设有关系R,按条件f对关系R进行选择,正确的是( )
【单选题】The weak Japanese yen and cyclical price declines have ___ to slash prices on Korea’s key exports.
【单选题】Which one of the following statements about cyclical unemployment is not correct?______.
A.
Cyclical unemployment exists when there are more job vacancies than there are individuals looking for jobs.
B.
Cyclical unemployment exists when there is a GNP gap.
C.
Cyclical unemployment is not included in the natural rate of unemployment.
D.
The duration of cyclical unemployment is affected by the level of aggregate demand.
【单选题】设有关系 R,按条件f对关系R进行选择,正确的是 。