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【单选题】
SN7400N 是一个集成块，它提供了 4 个与非门，在原理图上依次放置其中的一个与非门，与非门元件图标，修改其属性。将元件的 Designator（标识符）改为U1，Comment（注释）改为 74LS00，Part 分别改为 1/4、2/4、3/4、4/4。Part 是指此集成块提供的某个单元，SN7400 元件的 Part1/4 为（          ），以此类推。
A.
第一个与非门
B.
第二个与非门
C.
第三个与非门
D.
第四个与非门
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参考答案：
举一反三
【单选题】哪种广域网技术是在X.25公用分组交换网的基础上发展起来的?( )
A.
ATM
B.
帧中继
C.
ADSL
D.
DDN
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【单选题】（ 8 ）哪种广域网技术是在 X.25 公用分组交换网的基础上发展起来的？
A.
、 ATM
B.
、桢中继
C.
、 ADSL
D.
、光纤分布式数据接口
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【单选题】How did Polly feel as the moon shone on her?
A.
She felt all the happiness in the future.
B.
She felt disappointed for not seeing her husband for a long time.
C.
She felt all the more sentimental but at the same time more confident in the future.
D.
She felt proud of her husband.
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【单选题】In order to save time, how did Polly go home?
A.
By the tunnel.
B.
By train.
C.
By bus.
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【单选题】How did Polly feel as the moon shone on her?
A.
She felt all the more sentimental but at the same time more confident in the future.
B.
She felt all the more sentimental but at the same time lost faith in the future.
C.
She felt all the more sentimental but at the same time more critical in the future.
D.
She felt all the more sentimental but at the same time more cynical in the future.
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【单选题】How many letters did Polly write to her husband?
A.
six
B.
five
C.
four
D.
three
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【单选题】In letter 5, how did Polly imagine life after the war?
A.
Polly imagined she and Frank would listen to their favorite music together on Sunday nights.
B.
Polly imagined she and Frank would go to theaters.
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【判断题】槽形舱壁主要用于杂货船和油船。
A.
正确
B.
错误
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【判断题】利用Uster均匀度仪,可画出纱线的理想波谱图。
A.
正确
B.
错误
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【单选题】下面哪种微生物是光能有机营养型()
A.
蓝细菌
B.
硝化细菌
C.
大肠杆菌
D.
紫色非硫细菌
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相关题目：
【单选题】哪种广域网技术是在X.25公用分组交换网的基础上发展起来的?( )
A.
ATM
B.
帧中继
C.
ADSL
D.
DDN
查看完整题目与答案
【单选题】（ 8 ）哪种广域网技术是在 X.25 公用分组交换网的基础上发展起来的？
A.
、 ATM
B.
、桢中继
C.
、 ADSL
D.
、光纤分布式数据接口
查看完整题目与答案
【单选题】How did Polly feel as the moon shone on her?
A.
She felt all the happiness in the future.
B.
She felt disappointed for not seeing her husband for a long time.
C.
She felt all the more sentimental but at the same time more confident in the future.
D.
She felt proud of her husband.
查看完整题目与答案
【单选题】In order to save time, how did Polly go home?
A.
By the tunnel.
B.
By train.
C.
By bus.
查看完整题目与答案
【单选题】How did Polly feel as the moon shone on her?
A.
She felt all the more sentimental but at the same time more confident in the future.
B.
She felt all the more sentimental but at the same time lost faith in the future.
C.
She felt all the more sentimental but at the same time more critical in the future.
D.
She felt all the more sentimental but at the same time more cynical in the future.
查看完整题目与答案
【单选题】How many letters did Polly write to her husband?
A.
six
B.
five
C.
four
D.
three
查看完整题目与答案
【单选题】In letter 5, how did Polly imagine life after the war?
A.
Polly imagined she and Frank would listen to their favorite music together on Sunday nights.
B.
Polly imagined she and Frank would go to theaters.
查看完整题目与答案
【判断题】槽形舱壁主要用于杂货船和油船。
A.
正确
B.
错误
查看完整题目与答案
【判断题】利用Uster均匀度仪,可画出纱线的理想波谱图。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下面哪种微生物是光能有机营养型()
A.
蓝细菌
B.
硝化细菌
C.
大肠杆菌
D.
紫色非硫细菌
查看完整题目与答案
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