
3年级机械概念
Quiz
•
Other
•
2nd Grade
•
Practice Problem
•
Hard
LEE PENG
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是机械?
机械是能够转换能量或完成特定功能的设备或系统。
机械是一种化学物质
机械是一种植物
机械是一种动物
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
机械的种类有哪些?
mechanical machines, electrical machines, hydraulic machines, pneumatic machines, thermal machines, and chemical machines
computers, smartphones, televisions, radios, and cameras
cars, bicycles, motorcycles, trains, and airplanes
mechanical machines, electrical machines, hydraulic machines, pneumatic machines, thermal machines, and chemical machines
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
机械的作用是什么?
执行物理力或能量转换的工作
执行物理力或能量转换的工作是机械的作用
进行化学反应
控制电子设备的运行
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
机械是用来做什么的?
机械是用来做饭的
机械是用来娱乐的
机械是用来装饰的
机械是用来做工作的
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
机械在我们日常生活中的应用有哪些?
电梯、汽车、自行车、洗衣机、冰箱、空调等
电视、微波炉、电饭煲、电风扇、电吹风、电磁炉等
电梯、电视、电脑、手机、冰箱、洗衣机等
手机、平板电脑、电脑、打印机、相机、音响等
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
机械的定义是什么?
能够传输能量的装置或系统
能够转换能量、进行工作的装置或系统
能够产生能量的装置或系统
能够储存能量的装置或系统
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
机械的种类可以分为几大类?
四大类
五大类
三大类
六大类
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