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科学复习考2

Authored by 宋 Dina

Science

6th - 8th Grade

Used 3+ times

科学复习考2
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在静电中,带有正电荷的物体通常会吸引哪种电荷的物体?

正电荷

负电荷

中性电荷

不吸任何电荷

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

防静电衣物通常是用什么材料制成的?

金属

木材

塑料

纯绵

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

若甲乙两电棒相互排斥则____。

两棒都带正电

两棒都带负电

两棒都带同种电

两棒多带异种电

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在电路中得到持续电流的条件是___。

导线中有大量自由电子

用电器、导线必须与电源线连接

在电路中,必须有灯泡和电源

用导线将用电器和电源连成一个闭合回

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

导体的特点是___。

阻力小

阻力大

不导电

不发热

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列哪种物质不是导体?

橡胶

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在串联电路中,电流通过电器的路径是

仅一个路径

多个路径

随机路径

无规律路径

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