()基于决策目标和条件,分析制定可能采取的若干行动方案。
A.方案设计阶段
B.方案抉择阶段
C.信息收集阶段
D.方案评价阶段
参考答案:A
James Investments is calculating an unweighted (equally-weighted) index on a four stock portfolio. Use the following information to calculate the value of the index using the geometric and arithmetic mean.()
A.0.25
B.3.025
C.1.277
中晚期食管癌的主要症状是()
A.胸痛
B.呕吐
C.进行性咽下困难
D.消化道出血
E.贫血