In "LoveActually", Harry is not happy with ()when he is doing Christmas sho
In "LoveActually", Harry is not happy with ()when he is doing Christmas shopping with his wife.
A、Mia
B、the sales clerk
C、his employee
D、his child
In "LoveActually", Harry is not happy with ()when he is doing Christmas shopping with his wife.
A、Mia
B、the sales clerk
C、his employee
D、his child
第2题
A.10km/h、5km/h、3km/h
B.8km/h、5km/h、3km/h
C.8km/h、5km/h、1km/h
D.8km/h、3km/h、1km/h
第3题
优先编码器74HC147的功能表如下表所示,试用74HC147和适当的门构成输入为低有效的,输出为8421BCD码,并具有编码输出标志的编码器。
输入 | 输 出 |
overline{I_{1}}overline{I_{2}}overline{I_{3}}overline{I_{4}}overline{I_{5}}overline{I_{6}}overline{I_{7}}overline{I_{8}}overline{I_{9}} | overline{Y_{3}}overline{Y_{2}}overline{Y_{1}}overline{Y_{0}} |
H H H H H H H H H × × × × × × × × L × × × × × × × L H × × × × × × L H H × × × × × L H H H × × × × L H H H H × × × L H H H H H × × L H H H H H H × L H H H H H H H L H H H H H H H H | H H H H L H H L L H H H H L L L H L L H H L H L H L H H H H L L H H L H H H H L |
第5题
A.h> H,H*= H
B.h=H*, H*> H
C.h =H*, H*<H
D.h<H * , H*> H
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