People in industrial nations felt greatly surprised by the oil crisis in 1973 and 1974 because ______ .
A. they didn't expect the crisis to occur so soon
B. they couldn't live without oil
C. they found they were so dependent on foreign countries
D. they realized they were not the stronger nations at all
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长期趋势的测定主要是求趋势值。剔除季节波动、循环波动和不规则波动等因素的作用,从而使现象在长期内呈现出逐渐上升或下降的基本变动趋势。()
A. 正确
B. 错误
根据上海证券交易所A股送股日程安排:向证券交易所提交公告申请日为T-1日前。()
A. 正确
B. 错误
频繁更换岗位,不利于自己知识和技能的积累。()
A. 正确
B. 错误
ARP协议的功能是(40)
A. 实现域名到IP地址转换
B. 实现IP地址到域名的转换
C. 实现IP地址到物理地址转换
D. 实现物理地址到IP地址转换
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