如果存货市场供应不充足,即使满足有关的基本假设条件,也不能利用经济订货量基本模型。( )
参考答案:对
解析: 存货市场供应充足是建立存货经济批量基本模型的前提条件之一。
已知a+b+c=0,a2+b2+c2=1.
(1)求ab+bc+ca的值;
(2)求a4+b4+c4的值.
—Honest advice, though unpleasant to the ear, benefits conduct.
—I can’t agree more. _______.
A.A good medicine tastes bitter
B.Good health is above wealth
C.Hope for the best and prepare for the worst
D.Actions speak louder than words