推进国有企业改革和发展必须坚持“三改一加强'的指导方针。“三改一加强”是指（ ）。
D.改革同改建、改造、加强经营相结合

未分类题“一国两制'构想的核心问题是（ ）。D.和平统一

单项选择题使用60.0MHz的仪器，TMS吸收和化合物中某质子之间的频率差为180MHz。若使用40.0MHz的仪器，则它们之间的频率差是 A、120 MHz B、100 MHz C、160 MHz D、180 MHz

未分类题A manufacture packages soap powder in containers of three different sizes. The amount of soap powder in a full large container could fill exactly 3 of the medium containers or exactly 5 of the small containers. If an equal number of small and large containers are to be filled with the amount of soap powder that would fill 90 medium containers, how many small containers will be filled?E.55

多项选择题Thinking is a kind of cognitive activity, a rational stage of cognition, with abstraction, () and other characteristics.

单项选择题变压器运行时，其绕组和铁芯产生的损耗转变成（ ）， —部分被变压器各部件吸收使之温度升高，另一部分则散发到周围介质中。 A. 热量 B. 有功 C. 无功 D. 动能

未分类题A school bus has 10 double seats in each of 2 rows. Two students can sit in each double seat. If an empty bus starts out and makes two stops, picking up three times the number of students at the second stop as at the first stop, and if the bus is then filled to seating capacity, how many students got on the bus at the second stop?E.30

判断题一个机械结构只能建立一个装配尺寸链

未分类题If B is the midpoint of line segment AD and C is the midpoint of line segment BD, what is the value of AB AC?E.1 4

单项选择题在印象形成中，（）会在短时间内被个体关注。A、性别信息B、外形外貌C、身份角色信息D、价值观E、内在能力

未分类题提高自主创新能力，建设创新型国家，是我国国家发展战略的核心，实施这一战略，需要加快实施国家中长期科技发展规划纲要，大力鼓励和提倡自主创新；深化科技体制改革，发挥企业在技术创新和创业投资发展过程中的主体作用；做强做大装备制造业；支持和推进高新技术的研发和产业化，发展高新技术产业群，创造新的社会需求；继续实施科教兴国战略，人才强国战略和知识产权战略。建设创新型国家的核心是( )。D.体制