面向对象开发方法的步骤不包括()
A.OOA
B.OOD
C.OOM
D.OOP
参考答案:C
Sugar is not an important element in bread, but flour is _______. [ ]
A. unique
B. essential
C. natural
D. adequate
投资乘数(K)的计算公式是( )。
A.K=1/MPC
B.K=1/(MPC+MP
C.K=1/(1-MP
D.K=1/(1-MP