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问题 单项选择题

汉译英：“数量；合同”，正确的翻译为：______。

A．bacterium; content
B．quantity; commodity
C．protein; content
D．quantity; contract

答案

参考答案：D

选择题

集合A={x|C52x＜6}的真子集的个数是（　　）

A．1

B．3

C．7

D．15
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单项选择题

Sequential circuit is a common logic device whose output values, at a given instant, depend upon its input values and the internal state at that instant, and whose internal state depends upon the (66) preceding input values and the preceding internal state. A sequential circuit can assume a finite number of internal states and may therefore be regarded, from an abstract (67) , as a finite (68) .

Combinational circuit is another logic device whose output values, at any given instant, depend upon the input values at that instant. A combinational circuit is a (69) of a sequential circuit whose internal state is not taken (70) .

（70）处填（）。

A．calculation

B．in account

C．audit

D．attention
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