问答题简答题：对多个互斥方案比较选优，不能简单的按照效益-成本比指标排序，为什么？

题型：选择题

商品的价值不是由个别劳动时间决定的，但不能由此说个别劳动时间没有意义。下面关于个别劳动时间的意义的表述错误的是[ ]

A．个别劳动时间的变化最终会引起社会必要劳动时间的变化

B．只有降低个别劳动时间，企业才能在竞争中处于有利地位

C．个别劳动时间越低，就有可能获是越高的经济效益

D．降低商品的个别劳动时间就可以增加单位商品的价值量

查看答案

题型：多项选择题

牙周翻瓣术的意义是（）。

A.恢复正常的牙周组织

B.直视下刮除牙石及肉芽组织

C.修整牙龈外形

D.修整牙槽骨外形

E.建立平衡的关系

查看答案

题型：单项选择题

10岁女孩，体型矮小，缺乏第二性征， * * 不发育，无腋毛、阴毛，胸宽，双 * * 相距较远，且有智力低下，伴有颈蹼、颈短、下颌小，腭弓高，临床拟诊为先天性卵巢发育不全综合征，以下最具有诊断价值的是（）

A.体型矮小

B.性发育幼稚

C.染色体核型分析

D.尿中雌激素减少

E.原发性闭经

查看答案

题型：多项选择题

在商家后台的装修模块中说法正确的是（）

A.可以创建自定义页面

B.装修中有自定义模块

C.装修中可以使用代码装修

D.装修中不能使用代码装修

查看答案

题型：单项选择题

I want to divide human understanding into two kinds—classical understanding and romantic understanding. In terms of ultimate truth, a distinction of this sort has little meaning, but it is quite legitimate when one is operating within the classic mode used to discover or create a world of underlying form. The terms classical and romantic, as Phaedrus used them, mean the following:
A classical understanding sees the world primarily as underlying form itself. A romantic understanding sees it primarily in terms of immediate appearance. If you were to show an engine or a mechanical drawing or electronic scheme to a romantic, it is unlikely he would see much of interest in it. It has no appeal because the reality he sees is its surface. Dull, complex lists of names, lines and numbers. Nothing interesting. But if you were to show the same blueprint or give the same description to a classical person, he might look at it and then become fascinated by it because he sees that within the lines and shapes and symbols is a tremendous richness of underlying form.
The romantic mode is primarily inspirational, imaginative, creative, intuitive. Feelings rather than facts predominate. "Art" when it is opposed to "Science" is often romantic. It does not proceed by reason or by laws. It proceeds by feeling, intuition and esthetic conscience. In the northern European cultures the romantic mode is usually associated with femininity, but this is certainly not a necessary association.
The classic mode, by contrast, proceeds by reason and by laws—which are themselves underlying forms of thought and behavior. In the European cultures it is primarily a masculine mode and the fields of science, law and medicine are unattractive to women largely for this reason. Although motorcycle riding is romantic, motorcycle repair and maintenance are purely classic. The dirt gives it such a negative romantic appeal that women never go near it.

The word "dirt" in the last sentence refers to ______ .

A．underlying form itself

B．immediate appearance

C．romantic understanding

D．motorcycle maintenance

查看答案

对多个互斥方案比较选优，不能简单的按照效益-成本比指标排序，为什么？

题目：

答案：