已选分类
经济学
单选题假定消费者计划用100元钱购买单价为8元的X商品5件、单价为10元的Y商品6件,此时X、Y两商品的边际效用分别为20和30。为了效用达到最大,消费者应该( )。
单选题在一个简单经济的循环图中,经济的总收入和总支出( )。
单选题轮胎的需求价格弹性等于一1.3,而且供给曲线向上倾斜,如果对轮胎生产征收每个轮胎1美元的税收,那么均衡价格将( )
单选题下列( )交易在国民收入账户中属于投资。
单选题齐次线性方程组的系数矩阵为A,存在B≠O,使得AB=O,则______.
单选题
单选题
以下哪个不是存量指标( )。
A、消费总额
B、资本
C、社会财富
D、投资
单选题
单选题SMC 和MP 的变动方向
单选题如果无能力晋升,当然不谋求晋升。如果有能力晋升,但无能力胜任,也决不谋求晋升。
如果以下五人都认同以上断定,则哪种情况不可能出现?______
单选题宏云大师说,一个人,如果为了做某件好事,能够克服巨大的诱惑,他做这样的好事才是值得称赞的。宏云大师又说,有时一个人做某件好事,完全出于习惯,甚至出于本能,这也是值得称赞的。
以下哪项如果为真,能够合理地说明,宏云大师的上面两句话,看似冲突但实际上并不冲突?______
单选题画家戴维森的画在其最有名的作品《庆祝》创作之后卖得最好。在该作品揭幕前12个月里,戴维森卖了该时期创作的作品的57%,比先前时期比例要大一些。在某个流行杂志上刊载了对《庆祝》赞誉性评论后的12个月里,戴维森卖了该时期创作的作品的85%。有意思的是,这两个时期,戴维森的销售画作的收入大致相当,因为他在完成《庆祝》之前的12个月里销售的作品的数量与在支持性评论发表之后的12个月里的销售的作品的数量是一样的。
如果上述信息为真,以下哪一项能最恰当地由上述推理得出?
单选题已知,则=______.A.-2xdxB.C.D.
单选题设α
1
,α
2
,α
3
线性无关,则下列向量组线性相关的是______.
单选题假定经济实现了充分就业,总供给曲线具有正斜率,那么减税会使( )
单选题下列推理不正确的是:
单选题The world religion is derived from the Latin noun religion, which denotes both (1) observance of ritual obligations and an inward spirit of reverence. In modern usage, religion covers a wide spectrum of (2) that reflects the enormous variety of ways the term can be (3) At one extreme, many committed believers (4) only their own tradition as a religion, understanding expressions such as worship and prayer to refer (5) to the practices of their tradition. They may (6) use vague or idealizing terms in defining religion, (7) , true love of God, or the path of enlightenment. At the other extreme, religion may be equated with (8) , fanaticism, or wishful thinking. By defining religion as a sacred engagement with what is taken to be a spiritual reality, it is possible to consider the importance of religion in human life without making (9) about what is really is or ought to be. Religion is not an object with a single, fixed meaning, or (10) a zone with clear boundaries. It is an aspect of Human (11) that may intersect, incorporate, or transcend other aspects of life and society. Such a definition avoid the drawbacks of (12) the investigation of religion to Western or biblical categories (13) monotheism or church structure, which are not (14) . Religion in this understanding includes a complex of activities that cannot be (15) to any single aspect of human experience. It is a part of individual life but also of (16) dynamics. Religion includes not only patterns of language and thought. It is sometimes an (17) part of a culture. Religious experience may be expressed (18) visual symbols, dance and performance, elaborate philosophical systems, legendary and imaginative stories, formal (19) , and detailed rules of some ways. There are as many forms of religious expression as there are human cultural (20) .
单选题已知向量组α
1
=(1,0,2)
T
,α
2
=(1,1,3)
T
,α
3
=(1,-1,a+2)
T
,β=(1,2,a-1)
T
,若β不能由α
1
,α
2
,α
3
线性表示,则a=______.
单选题十几年来,海达冰箱厂通过不断引进先进设备和技术,使得劳动生产率大为提高,即在单位时间里,较少的工人生产了较多的产品。
以下哪项如果为真,一定能支持上述结论?
(1)和2001年相比,2014年海达冰箱厂的年利润增加了一倍,工人增加了10%;
(2)和2001年相比,2014年海达冰箱厂的年产量增加了一倍,工人增加了100人;
(3)和2001年相比,2014年海达冰箱厂的年产量增加了一倍,工人增加了10%。
单选题设A,B都是n阶可逆矩阵,则=______
