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【简答题】
利用74LS194构成三分频器 A. 解： 由题意可知 2N-1=3，N=2,1. 如下图所示。 B. 解： 由题意可知 2N-1=3，N=2,1. 如下图所示。 但，经分析后有如下缺陷： 如图所示，在第4个CP到来后，仍未完成循环，可见是失败的。 C. 解： 由题意可知 2N-1=3，N=2,1. 如下图所示。 经分析该设计不存在上述的缺陷。
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参考答案：
举一反三
【单选题】与生产现场设备相连,输入现场信号或输出电信号驱动执行机构是 PLC 的功能
A.
I/O模块
B.
CPU模块
C.
电源模块
D.
梯形图
查看完整题目与答案
【多选题】下列哪些是墨子的主张?()
A.
尚俭
B.
明鬼
C.
节用
D.
尊禹
查看完整题目与答案
【多选题】What is a feature usually about?
A.
Personal stories.
B.
Local customs.
C.
Historical story.
D.
Breaking news.
查看完整题目与答案
【单选题】服务人员在会中服务时,应尽量( ),以免打扰到参会人员。
A.
不要动;
B.
放慢动作;
C.
放快动作;;
D.
放轻动作
查看完整题目与答案
【多选题】关于西周法制的表述,下列哪些选项是错误的?
A.
周初统治者为修补以往神权政治学说的缺陷，提出了“德主刑辅，明德慎罚”的政治法律主张
B.
《汉书·陈宠传》称西周时期的礼刑关系为“礼之所去，刑之所取，失礼则入刑，相为表里”
C.
西周的借贷契约称为“书约”，法律规定重要的借贷行为都须订立书面契约
D.
西周时期在宗法制度下已形成子女平均继承制
E.
西周的五刑分别是笞、墨、刖、宫、大辟
查看完整题目与答案
【单选题】Which of the following is TRUE about the feature of dolphins?
A.
Dolphins arc only friendly to people when they are tamed.
B.
They are quite easy to make friends with.
C.
They are the only wild animal that approaches man willingly.
D.
They show no interest in people's actions.
查看完整题目与答案
【单选题】What's the special feature about the treated fibers?
A.
They can store heat
B.
They are thick.
C.
They can absorb sweat.
D.
They expand when heated.
查看完整题目与答案
【多选题】Which three statements about the DHCP snooping feature on Cisco Nexus switches are true？ （）
A.
DHCP snooping commands are not available until the feature is enabled with the feature dhcp- snooping command.
B.
When you enable the DHCP snooping feature， the switch begins building and maintaining the DHCP snooping binding database.
C.
The switch will not validate DHCP messages received or use the DHCP snooping binding database to validate subsequent requests from untrusted hosts until DHCP snooping is enabled globally and for each specific VLAN.
D.
Globally disabling DHCP snooping removes all DHCP snooping configuration on the switch.
E.
Globally disabling DHCP snooping does not remove any DHCP snooping configuration or the configuration of other features that are dependent upon the DHCP snooping feature.
查看完整题目与答案
【单选题】______ is a design feature of human language that enables speakers to talk about a wide range of things, free from barriers caused by separation in time and space.
A.
Displacement
B.
Arbitrariness
C.
Duality
D.
Productivity
查看完整题目与答案
【简答题】What is the feature about it?
查看完整题目与答案
相关题目：
【单选题】与生产现场设备相连,输入现场信号或输出电信号驱动执行机构是 PLC 的功能
A.
I/O模块
B.
CPU模块
C.
电源模块
D.
梯形图
查看完整题目与答案
【多选题】下列哪些是墨子的主张?()
A.
尚俭
B.
明鬼
C.
节用
D.
尊禹
查看完整题目与答案
【多选题】What is a feature usually about?
A.
Personal stories.
B.
Local customs.
C.
Historical story.
D.
Breaking news.
查看完整题目与答案
【单选题】服务人员在会中服务时,应尽量( ),以免打扰到参会人员。
A.
不要动;
B.
放慢动作;
C.
放快动作;;
D.
放轻动作
查看完整题目与答案
【多选题】关于西周法制的表述,下列哪些选项是错误的?
A.
周初统治者为修补以往神权政治学说的缺陷，提出了“德主刑辅，明德慎罚”的政治法律主张
B.
《汉书·陈宠传》称西周时期的礼刑关系为“礼之所去，刑之所取，失礼则入刑，相为表里”
C.
西周的借贷契约称为“书约”，法律规定重要的借贷行为都须订立书面契约
D.
西周时期在宗法制度下已形成子女平均继承制
E.
西周的五刑分别是笞、墨、刖、宫、大辟
查看完整题目与答案
【单选题】Which of the following is TRUE about the feature of dolphins?
A.
Dolphins arc only friendly to people when they are tamed.
B.
They are quite easy to make friends with.
C.
They are the only wild animal that approaches man willingly.
D.
They show no interest in people's actions.
查看完整题目与答案
【单选题】What's the special feature about the treated fibers?
A.
They can store heat
B.
They are thick.
C.
They can absorb sweat.
D.
They expand when heated.
查看完整题目与答案
【多选题】Which three statements about the DHCP snooping feature on Cisco Nexus switches are true？ （）
A.
DHCP snooping commands are not available until the feature is enabled with the feature dhcp- snooping command.
B.
When you enable the DHCP snooping feature， the switch begins building and maintaining the DHCP snooping binding database.
C.
The switch will not validate DHCP messages received or use the DHCP snooping binding database to validate subsequent requests from untrusted hosts until DHCP snooping is enabled globally and for each specific VLAN.
D.
Globally disabling DHCP snooping removes all DHCP snooping configuration on the switch.
E.
Globally disabling DHCP snooping does not remove any DHCP snooping configuration or the configuration of other features that are dependent upon the DHCP snooping feature.
查看完整题目与答案
【单选题】______ is a design feature of human language that enables speakers to talk about a wide range of things, free from barriers caused by separation in time and space.
A.
Displacement
B.
Arbitrariness
C.
Duality
D.
Productivity
查看完整题目与答案
【简答题】What is the feature about it?
查看完整题目与答案
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