联欢晚会上,想装一些彩灯增加气氛,每只小彩灯工作电压不能大于4.4V,但只能用照

题型:填空题

问题:

联欢晚会上,想装一些彩灯增加气氛,每只小彩灯工作电压不能大于4.4V,但只能用照明电路供电,则至少需要______只彩灯______联起来才能使用.

考点:欧姆定律及其应用电阻的串联串联电路的电压规律
题型:填空题

病毒感染力的滴定常用中和试验,关于中和试验错误的是()

A.结果的判定是要比较病毒受免疫血清中和后残余的感染力

B.必须在敏感动物、鸡胚和组织培养内进行

C.需设严格对照实验

D.主要影响因素为病毒、抗血清、孵育的温度和时间、动物和细胞的选择和质量

E.可取高滴度病人早期血清(发病两周内)用于中和试验

题型:填空题

如果一游客要参观欧洲最大的电子工业中心,应该去( )

A.杜伊斯堡

B.汉堡

C.法兰克福

D.慕尼黑

题型:填空题

微生物含有哪些化学组成?各组分占的比例是多少?

题型:填空题

A narrowing of your work interests is implied in almost any transition from a study environment to managerial or professional work. In the humanities and social sciences you will at best reuse only a fraction of the material (1) in three or four years’ study. In most career paths academic knowledge only (2) a background to much more applied decision-making. Even with a " training " form of degree, (3) a few of the procedures or methods (4) in your studies are likely to be continuously relevant in your work. Partly this (5) the greater specialization of most work tasks compared (6) studying. Many graduates are not (7) with the variety involved in (8) from degree study in at least four or five subjects a year to very standardized job (9) . Academic work values (10) inventiveness, originality, and the cultivation of self-realization and self-development. Emphasis is placed (11) generating new ideas and knowledge, assembling (12) information to make a " rational " decision, appreciating basic (13) and theories, and getting involved in fundamental controversies and debates. The humanistic values of higher (14) encourages the feeling of being (15) in a process with a self-developmental rhythm. (16) , even if your employers pursue enlightened personnel development (17) and invest heavily in " human capital " —for example, by rotating graduate trainees to (18) their work experiences—you are still likely to notice and feel (19) about some major restrictions of your (20) and activities compared with a study environment.

4()

A.practiced

B.described

C.encountered

D.analyzed

题型:填空题

下列不可以成为普通合伙人的是()。

A.公益性事业单位

B.国有独资公司

C.上市公司

D.民营有限责任公司

E.国有企业

更多题库