投资函数是向右下方倾斜的曲线。
参考答案:对
解析: 根据资本边际效率递减规律,投资是利率的减函数,投资函数反映的是投资和利率之间的关系,向右下方倾斜。
爸爸要加工一批零件,计划每天加工24个,正好可按期完成,现在要求工期缩短20%, 爸爸每天要加工多少个才能达到要求? (用比例知识解答)
A common question that people ask a story writer is whether or not he has experienced what he has written about.
A.fiction
B.science
C.imaginary
D.literary