科学(复习)
Quiz
•
Science
•
4th - 6th Grade
•
Hard
CHOO Moe
Used 2K+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
什么是“复杂机械”?
能够帮助人类的机械
需要长时间组装的机械
操作方法非常复杂的机械
由两个或以上的简单机械组成的机械
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
工具G是由轮轴和杠杆所组成的复杂机械。
工具G是什么?
独轮手推车
汽车方向盘
自行车
手表
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
X 是绕着圆柱体的斜面
Y 是由两个斜面组成
哪个物品应用了上述说明中的两个简单机械的原理?
铁钉
手摇钻
千斤顶
刀片
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
动物的牙齿应用了哪个简单机械的原理?
滑轮
齿轮
尖劈
螺旋
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
哪个用具应用的简单机械原理与图中的用具相同?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
哪项有关杠杆的说明是正确的?
杠杆的支点一定是在动力点和阻力点之间
支点越靠近阻力点,就越省力
杠杆是由三个简单机械组成的机械
杠杆可以用来改变力的方向
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
图中的公路应用了哪种简单机械?
螺旋
斜面
杠杆
尖劈
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