两灯泡串联后接入电路,其中一只亮,另一只不亮,产生这种现象的原因不可能的是 [

题型:选择题

问题:

两灯泡串联后接入电路,其中一只亮,另一只不亮,产生这种现象的原因不可能的是 [ ]

A.不亮灯泡的电阻太小

B.不亮灯泡中通过的电流太小

C.不亮灯泡两端的电压太小

D.不亮灯泡的实际电功率太小

考点:串联电路的电流规律电功率的计算
题型:选择题

Square Dance ABC is an exciting new way to practice square dancing.

Enjoy a fan, easy beginner’s square dance, with no experience needed.

There are three different dances. The A, B and C dances can be experienced in any order. This is the main difference between Square Dance ABC and the traditional “lesson-based” way. You can do the three beginner’s dances in any order.

Instead of waiting until a class starts once a year, people can start Square Dance ABC any time!

After all three dances (in an order), dancers have learned 22 square dance movements. The next step is the experienced ABC dance, using all 22 movements.

It is easy to convince people to try square dancing any time. Most people that try it will like it. Square Dance ABC will bring lots of opportunities(机会) for fun, fitness and friends!

Come on, we’ll make this project as easy as A-B-C!

If you have questions or comments about this site, please e-mail us at Webmaster@Square Dance ABC.com.

小题1:Who might be interested in this website?

A.Kids that are good at drawing.

B.Adults that want to go traveling

C.Volunteers that want to teach children

D.People that want to learn to dance.小题2: If you join the Square Dance ABC, you can _________.

A.save lots of money for a holiday.

B.try square dancing only once

C.stay healthy and make lots of friends

D.learn the English letters ABC more easily小题3: The passage is probably ________.

A.an advertisement by an English club

B.an invitation by an English club

C.an application by a sports club

D.an advertisement by a dance club

题型:选择题

黑板反光是因为发生了______反射,电影幕布用粗糙的帆布制成利用了光的______反射.

题型:选择题

晚期棉的纤维品质特点为()。

A.成熟度低

B.纤维短

C.颜色白

D.强度人

题型:选择题

市场经济条件下,当劳动报酬在国民收入分配中缺乏起码的公平时,社会心理就很难积淀起劳动光荣的观念。这说明(    )

A.社会意识具有独立性

B.价值观具有导向作用

C.社会存在决定社会意识

D.价值创造和价值享受同等重要

题型:选择题

正常成人24小时水的出入量为( )

A.2500~3000ml
B.3000~3500ml
C.1000~1500ml
D.2000~2500ml
E.1500~2000ml

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