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【单选题】
采用强制确定法进行价值工程的对象选择时，若某零部件的价值系数为0.6，则( )A.
该零部件可不作为重点改进对象
B.
该零部件应作为价值分析的重点对象
C.
说明该零部件的功能重要性高，而相应的成本比例较低
D.
说明该零部件的功能重要性与所花费成本比例是相称的
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举一反三
【单选题】Talent can come in so many different forms and be built in so many nontraditional ways today, hiring officers have to be alive to every one — besides brand-name colleges. (Para. 9)
A.
Talented people seeking employment at Google are from all walks of life and are nurtured in so many unconventional ways that hiring officers should be alert to every one especially those from big name schools.
B.
Talent can be displayed in so many different forms and cultivated in so many nontraditional ways today, hence hiring officers must be open-minded and creative in hunting up talent, not having their eyes only on graduates from famous colleges.
【单选题】冯·诺依曼在总结研制ENIAC计算机时,提出了两个重要的改进是( )
A.
引入CPU和存储器的概念
B.
采用机器语言和十六进制
C.
采用二进制和存储程序控制的概念
D.
采用ASCII编码系统
【单选题】Talent can come in so many different forms and be built in so many nontraditional ways today, hiring officers have to be alive to every one — besides brand-name colleges. (para 9)
A.
Talented people seeking employment at Google are from all walks of life and are nurtured in so many unconventional ways that hiring officers should be alert to every one especially those from big name schools.
B.
Talent can be displayed in so many different forms and cultivated in so many nontraditional ways today, hence hiring officers must be open-minded and creative in hunting up talent, not having their eyes only on graduates from famous colleges.
【多选题】真核生物基因表达调控的特点
A.
既有瞬时调控，又有发育调控
B.
比原核生物多了染色质重塑、mRNA转录后加工、蛋白质定向运输等调控环节
C.
转录调控以负调控为主
D.
染色质结构变化参与基因表达调控
E.
调控原件复杂且可远离转录区
F.
转录因子种类多，且调控机制更复杂
【简答题】简述真核生物基因表达调控的特点。
【单选题】冯 . 诺依曼在总结研制 ENIAC 计算机时,提出两个重要改进是:( )
A.
引入 CPU 和内存储器的概念
B.
采用机器语言和十六进制
C.
采用二进制和存储程序控制的概念
D.
采用 ASCII 编码系统
【简答题】思考题: 假如你是某药品经营企业某一关键岗位上的员工,在这新型冠状病毒感染肺炎疫情防控的关键时期,你该如何更好地履行你的职责?
【多选题】真核生物基因表达调控的特点如下( )
A.
基因表达有转录水平和转录后的调控，且以转录水平调控为主。
B.
正性调节占主导，且一个真核生物基因通常有多个调控序列，需要有多个激活物。
C.
负性调节占主导在结构基因上游没有调控成分。
D.
DNA碱基修饰变化、组蛋白变化、DNA拓扑结构变化等都不具有调控作用。
【简答题】局部视图的断裂边界用 表示
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