One famous OS of smart phone is.
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One means of implementing time-sharing is to apply the technique called,in which time is divided into intervals and then the execution of each job is restricted to only one interval at a time.
1.证券公司在英国称投资银行,欧美大陆称之为商人银行。
A. 对
B. 错
2.证券市场机构主要包括证券公司、证券交易所、证券经纪人和证券结算中心。
A. 对
B. 错
3.保险是以社会互助的形式,对因各种自然灾害和意外事故造成的损失进行补偿的一种方式。
A. 对
B. 错