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【单选题】
逻辑电路的信号有两种状态:一是高电位状态,用“1”表示;另一种是低电位状态,用“0”表示.关于这里的“1”和“0”下列说法中正确的是A.
“1”表示电压为1 V，“0”表示电压为0 V
B.
“1”表示电压为大于或等于1 V，“0”表示电压一定为0 V
C.
“1”和“0”是逻辑关系的两种可能的取值，不表示具体的数字
D.
“1”表示该点与电源正极相连，“0”表示该点与电源负极相连
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举一反三
【简答题】He walked out of the chairman ’ s office, having a smile on his face.
【单选题】某轮计划由14°02′.2S, 116°06′.0E航行到5°50′.0N, 79°02′.0E,则相应的大圆始航向为 。
A.
116°
B.
296°
C.
154°
D.
306°
【简答题】When he walked out of the boss's office, his head was held high.
【单选题】某轮计划由14°02′.2S, 116°06′.0E航行到5°50′.0N, 79°02′.0E,则相应的大圆航程为 。
A.
2508 n mile
B.
2618 n mile
C.
2892 n mile
D.
2708 n mile
【单选题】What was the author's first impression of the city when he walked out of the station?
A.
beautiful
B.
devastated
C.
crowded
D.
ugly
【简答题】推进生态文明建设的基本途径和方式是什么?(简答题)
【简答题】He walked out of the chairman’s office, having a smile on his face.
【单选题】After that he walked out of the room and shut the door _____ her _____.
A.
cut; short
B.
look; around
C.
in; face
D.
turn; back
【简答题】改错: He walked out of the chairman's office, having a smile on his face.
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