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外语
______is the speed at which something moves in a particular direction.
______is the speed at which something moves in a particular direction.
admin
2015-04-29
11
问题
______is the speed at which something moves in a particular direction.
选项
A、Voltage
B、Velocity
C、Proportion
D、Frequency
答案
B
解析
名词辨析题。velocity意为“速率”,符合句意,故[B]为答案。voltage意为“电压”;proportion意为“比例;面积”;frequency意为“频率”。
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专业英语四级
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