在软件开发中常用的概念有许多种,用来描述某一业务处理系统的信息来源、存储、处理和去向的全面情况的是( )。
A.数据流程图
B.实体关系图
C.框图
D.结构图
参考答案:A
消费者重视广告表现的商品效能是()
A.所有商品特性
B.特有的主张
C.商品的安全特点
D.最喜欢的商品特性
An investor purchased on margin 1000 shares of a stock priced at $ 50 per share. The investor borrowed the maximum amount allowed by the initial margin requirement of 60 percent. The maintenance margin is 30 percent. The lowest price share at which the stock could sell before the investor would receive a margin call is closest to:
A.
B.
C.