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四年级科学机械

Authored by Alice Thai

Science

4th Grade

Used 18+ times

四年级科学机械
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15 questions

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1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

以下哪项属于简单机械?

杠杆

电脑

齿轮

尖劈

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

“切割、劈开或凿(záo)开物体。”


以下哪样简单机械符合上述用途?

齿轮

尖劈

螺旋

斜面

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

手表应用了以下简单机械,除了__________

齿轮

螺旋

斜面

轮轴

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

“斜面越长,斜面的倾斜度越小,就越省力。”

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

以下的工具都是以尖劈的原理操作,除了

Media Image
Media Image
Media Image
Media Image

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

简单机械有几个种类?

6

5

9

7

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

“边缘呈齿状的轮,转动一个齿轮能带动另一个齿轮。”


以上的简述是指哪样简单机械?

斜面

滑轮

齿轮

螺旋

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