某一计算机应用系统中采用8254的计数器0做频率发生器，计数器0的计数时种频率为2775MHz，欲使它输出一个频率为2500Hz的信号，则在初始化时，送到计数器0的计数初值是()。
A. 0FFFH
B. 02FFH
C. 01FFH
D. 00FFH
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A．They don't enjoy swimming.B．They don't know how to swim.C．They'll swim in. the lake
A. They don't enjoy swimming.
B. They don't know how to swim.
C. They'll swim in. the lake tomorrow.
D. They won't go swimming in the lake today.
轨道线和趋势线是相互合作的一对。趋势线可以独立存在，轨道线也可以独立存在。 ()
A. 正确
B. 错误
债券的期限越长，流动性溢价越小，体现了期限长的债券拥有较低的价格风险。()
A. 正确
B. 错误
中国证监会在初审过程中，将就发行人的投资项目是否符合政府产业政策征求国家发改委的意见。 ()
A. 正确
B. 错误
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