
6年级 科学 第二学期 练习11
Authored by Lim Kian Ming
Science
1st - 12th Grade
Used 1+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
摩擦力是一种___________ 物体运动的力。
帮助
阻碍
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
摩擦力能使行驶的交通工具_______________。
飞行
加速
停下
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项不是与摩擦力的用处有关的?
玻璃平滑的表面
鞋底的花纹
手指的指纹
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项不是与摩擦力的用处有关的?
玻璃平滑的表面
鞋底的花纹
手指的指纹
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
摩擦力有什么坏处?
磨损轮胎
使物体发出刺耳的声音。
使物体移动得更快。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
摩擦力会使工作变得更_____________。
费力
省力
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
摩擦力会使鞋底变得______________。
平滑
粗糙
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