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简单机械:螺旋

Authored by LEE Moe

Science

4th Grade

Used 48+ times

简单机械:螺旋
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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

螺旋应用了哪个简单机械的原理?

杠杆

齿轮

斜面

滑轮

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

缠绕在一个圆柱体的斜面就形成了............

杠杆

螺旋

齿轮

滑轮

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

螺旋在日常生活的用途很广,除了....

把重物架高起来

把两个物体嵌合在一起

瓶盖能锁紧在瓶口

改变速度

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

哪几项是应用螺旋的好处?(选出2项)

十分牢固

改变方向

容易拆卸

改变速度

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

螺纹越....................越 ...................,能承受……的力。

松.........省力……大

松……省力……小

密……省力……大

密……省力……小

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

有越……螺纹的螺钉能使物体嵌合得更加……

少……牢固

密……牢固

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

在日常生活中,哪些物品应用了螺旋?(超过一项)

瓶盖

楼梯

水龙头

手摇钻

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