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四年级科学 - 机械 (杠杆)

Authored by YeeLing Lee

Science

4th Grade

Used 9+ times

四年级科学 - 机械 (杠杆)
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10 questions

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1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

杠杆有三个重要的位置,是什么?

支点

省力点

动力点

阻力点

用力点

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

图片中哪个部分是支点?

P

Q

R

S

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

扫把应用了哪种简单的机械原理?

滑轮

斜面

杠杆

齿轮

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

以下哪项不是简单机械?

杠杆

滑轮

斜面

磁铁

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

哪一种工具不属于杠杆原理的应用?

剪刀

核桃夹

温度计

羊角锤

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

—————支撑着杠杆,使杠杆能围绕着转动的位置。

动力点

阻力点

支点

费力点

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

承受重物的位置是?

动力点

阻力点

支点

费力点

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