简单机械（轮轴）
Authored by LEE Moe
Science
4th Grade
Used 38+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
轮轴是由什么组成的？
斜面
轮和轴
齿状轮
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
轮轴中的两个轮子转动的方向是怎样的？
方向相同
不同方向
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
轮轴中两个轮子转动的速度是怎样的？
相同
不相同
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当轮子以逆时方向转动，轴转动的方向是……
顺时
逆时
停止
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
轮轴应用了哪个简单机械的原理？
齿轮
滑轮
杠杆
尖劈
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
轮轴中的轮子较……较省力。
小
大
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
转动哪个轮轴最省力？
轮子小的轮轴
轮子和轴心直径相差小
轮子和轴心的直径相差大
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