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【判断题】
接口芯片 74LS244 由 8 个三态门组成,当某一个控制端有效(低电平)时,所控制的 4 个三态门导通,否则,所控制的 4 个三态门断开。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】A．desire B．trend C．track D．expectation
【简答题】适应性预期(adaptive expectation)
【简答题】通信是 人与人 、 人与机器 和 之间进行信息传递与交换的过程。
【简答题】A) exposition B) exposure C) expectation D) exhibition
【简答题】A．choice B．preference C．option D．expectation
【单选题】A rational expectation is
A.
a correct forecast but it might not be the best available forecast.
B.
an incorrect forecast.
C.
not necessarily correct but is the best available forecast.
D.
necessarily correct because it is the best available forecast.
E.
:C
F.
程度:中 答案解析: Rational Expectation Theories 题型:单选题
G.
9、 If Samantha predicts future inflation based on rational expectations, then
H.
her forecast of inflation will always be correct.
I.
she uses all relevant information to forecast inflation.
J.
she looks only to the past to help her predict future inflation. K. she never under estimates inflation.