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头脑风暴法是激励广告策划创意思维的重要方法,但在实践中也要注意以下几点:( )。A、实施成本低B、实施成本高C、参与者要有较好的素质D、产生巨量的创意想法E、具有可操作价值的方案不多

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单项选择题使用8253的某个计数模块产生2MS的定时,已知输入的高频脉冲信号的频率为2MHZ,若采用二进制计数方式,则写入8253的计数初值为

A.1000
B.2000
C.4000
D.8000

单项选择题Lisa wants to be certain she has done all she can do to help her business survive, so she has written a business plan. One advantage of developing the plan is that it _____. A、forces Lisa to think carefully about all aspects of her planned business. B、enables Lisa to switch herself from a sole proprietorship to a corporation without any further paperwork. C、focuses Lisa’s attention on her personal talents and experiences. D、makes Lisa feel how successful she is.