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【单选题】
假设模拟信号的最高频率为10MHz,采样频率必须大于(22),得到的样本信号才能不失真。
A.
5MHz
B.
10MHz
C.
15MHz
D.
20MHz
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举一反三
【单选题】三相异步电动机既可以接成星形连接,也可以接成三角形连接,具体取决于___________
A.
电源电压和绕组的额定电压
B.
负载的大小
C.
输出的额定功率
D.
电流的大小
【单选题】Farmers in our province were encouraged to() into new crops last year. Nowthey sell different kinds of grains in the market.
A.
distribute
B.
diversify
C.
signify
D.
signal
【多选题】改进Cache性能的方法主要有( )
A.
降低失效率
B.
减少失效开销
C.
减少Cache命中时间
D.
时间片
【单选题】It is reported that between the year 1550 and 1950 about one kind of living things___each year .
A.
died out
B.
died of
C.
died from
D.
died down
【多选题】对于现金损溢表述正确的有
A.
企业清查的库存现金损溢,一般应于期末前查明原因,在期末结账前处理完毕
B.
如果清查的库存现金损溢在期末前尚未批准的,在对外提供财务报表时先按上述原则进行处理,并在财务报表附注中说明
C.
如果其后批准处理的金额与处理的金额不一致,再按资产负债表日后事项的处理原则调整财务报表相关项目的年初数
D.
所有现金清查过程中发生的短款都作为“营业外支出”处理
【单选题】Christmas Eve(圣诞前夜) arrives at my house each year. The center of the celebration is dinner. My mother spends days preparing a rich variety of seafood. The guest list seldom changes. It is made up of m...
A.
The rest of the guests.
B.
The children of the guests.
C.
The writer and her mother.
D.
Sal's family members.
【判断题】财产清查过程中所产生的损溢,如果在期末结账前尚未经批准,可不予处理。
A.
正确
B.
错误
【简答题】Last year, the Kensington mine in Alaska was permitted to dispose over toxic mine waste directly into a freshwater lake, decimating its native fish population.
【单选题】下面关于变焦使用的注意事项,说法不正确的是
A.
注重对变焦距动点、动向、动速的控制
B.
变焦的起幅和落幅要果断
C.
不同机位对同一物体单一方向的变焦推拉,景别相同
D.
变焦镜头的推拉要考虑后期剪辑的需要和上下镜头组接的流畅性
【简答题】Columbus di scov ered the New World in the year of ___________.
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