A.使乘數(shù)增大,使總支出函數(shù)變得平緩 B.使乘數(shù)減小,使總支出函數(shù)變得平緩 C.使乘數(shù)增大,伎總支出函數(shù)變得陡峭 D.使乘數(shù)減小,使總支出函數(shù)變得陡峭