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WorksheetsWORLD ECO ROBOTICS 3rd Competition 2024
Total questions: 24
Worksheet time: 24mins
风帆车的动力装置包括
The component(s) that provide power of sailing vehicle.
A. 主帆 Mainsail
B. 桅杆 The mast
C. 车轮 The wheels
D. 舵机 Servo(s)
一般的伺服电机可以转动的幅度有多大？
What is the typical range of motion for a general servo motor?
A. 0 – 180°
B. 0 – 90°
C. 0 – 360°
D. 可以转动任意幅度 Any angle
风帆船直行可用风向包括
Available wind directions for sailing vehicle traveling straight include:
A. 顺风 Tailwind
B. 顶头风 Headwind
C. 侧风 Crosswind
D. 侧逆风 Side Headwind
以下哪些是面向对象编程语言的特点？
Which of following selections are the characteristics of object-oriented programming languages?
A. 继承 Inherit
B. 多态 Polymorphism
C. 封装 Encapsulation
D. 调用函数 Function call
在无风带内如何解决动力问题 ?
How to solve the power supply problem in windless zone?
A. 使用舵机
Use servo
B. 摇动风帆
Use the sail
C. 摇动转向舵或转向轮
Rock the rudder or wheel
D. 用风扇或螺旋桨往相反方向吹
Use a fan or propeller to blow in the opposite direction
Logistic Regression可以用于下列哪些问题？
Logistic Regression can be used for which of the following problems?
A. 通过人的面部图片识别人的情绪
Recognizing a person's emotion from facial images
B. 预测一个国家GDP的增长率
Predicting a country's GDP growth rate
C. 阻止垃圾邮件
Blocking spam emails
D. 预测一名同学考试及格的可能性
Predicting the probability of a student passing an exam
目前商用太阳能电池效率大约能达到多少?
What’s the approximate efficiency of commercial solar cells?
A. 1%
B. 5%
C. 20%
D. 33%
F. 50%
下面关于4个字节的浮点数的说法正确的有？
Which of the following statements about 4-byte floating numbers are correct?
A. 只能表示部分有理数
Can only represent a subset of rational numbers.
B. 不能表示整数
Cannot represent integers.
C. 可以表示无穷多个数
Can represent infinitely many numbers.
D. 可以表示无理数
Can represent irrational numbers.
在机械结构中，齿轮可以起到什么作用？
What role do gears play in a mechanical structure?
A. 传递动力
Transmit power
B. 转换转动速度
Convert rotation speed
C. 转换扭力
Convert torque
D. 改变转动方向
Change direction of rotation
下面的代the码输出结果是多少？
What is output of the following code?
A. 编译错误 Compilation error
B. 程序运行错误 Runtime error
C. 5 4 3 2 1
D. 5 4 3 2 1 0
F. 死循环 Infinite loop
根据三角定位原理，理论上至少需要几颗卫星的定位信号才能锁定定位（经纬度、海拔）？
According to the principle of triangulation, at least how many satellites are required in different latitude, longitude and altitude to locate the target?
A. 1
B. 2
C. 3
D. 4
用Arduino控制直流电机，下面的做法正确的是？
When using Arduino to control a DC motor, which of the following is correct?
A. 可以用PWM Pin连接直流电机电压输入，通过改变PWM duty cycle从而改变电机速度
The PWM pin can be connected directly to the DC motor's voltage input, and the motor speed can be controlled by changing the PWM duty cycle.
B. 可以用Analog Pin连接直流电机电压输入，因为Analog Pin可以输出不同的电压
The Analog pin can be connected directly to the DC motor's voltage input because Analog pins can output different voltages.
C. 不可以直接用Ardunio的任何一个引脚直接控制直流电机
None of Arduino's pins can directly control a DC motor.
陀螺仪的工作原理是
The working principle of gyroscope is:
A. 动量守恒 Momentum conservation
B. 牛顿第一定律 Newton’s first law
C. 牛顿第三定律 Newton’s third law
D. 角动量守恒 Angular momentum conservation
电脑CPU的时钟频率是衡量CPU好坏的重要指标，以下说法正确的是？
The clock frequency of a computer's CPU is an important indicator of the CPU. Which of the following statements is correct?
A. 频率越高，CPU散热越快
The higher the frequency, the faster the CPU dissipates heat.
B. 频率越高，CPU储存数据越多
The higher the frequency, the more data the CPU stores.
C. 频率越高，执行命令越快
The higher the frequency, the faster the command is executed.
D. 频率越高，从传统硬盘读取速度会快很多
The higher the frequency, the faster it will be to read from a traditional hard drive.
从出发地A到目的地B是顶头风，如何规划行驶路径是最佳解决方案?
There is a headwind from departure point A to destination B. How to plan the driving path is the best solution?
A. 直接从A向B行驶
Sailing directly from A to B
B. 先顺风加速再突然掉头
Sailing with the wind then suddenly turn around
C. 绕圈行驶
Sailing in circle
D. 蛇形走位
Zigzag Sailing
控制伺服电机的电信号是什么信号？
What type of electrical signal is used to control a servo motor?
A. 方波 Square wave
B. 三角波 Triangle wave
C. 正弦波 Sine wave
D. 锯齿波 Sawtooth wave
转弯系统包括那些部件
The turning system includes:
A. 舵机 Servo
B. 连杆 Rod
C. 车轮 Wheel
D. 车轴 Axle
下面的代码输出结果是多少？
What is output of the following code?
A. 0 1 2
B. 0 1 2 3
C. 1 2 3
D. 0 1 2 3 4 … infinite loop
以下关于风帆车的重心位置与稳定性的描述那些是正确的？
Which of the following descriptions about the center of gravity and stability of a sailboat are correct?
A. 重心越低越稳定
The lower the center of gravity, the more stable it is.
B. 桅杆越高重越稳定
The taller the mast, the more stable it is.
C. 底盘上电池越重则重心越低
The heavier the battery on the chassis, the lower the center of gravity.
D. 桅杆高度跟稳定性无关
Mast height has nothing to do with stability.
F. 没有关联
No relevance.
下面的代the码输出结果是多少？
What is output of the following code?
A. 编译错误
Compilation error
B. 死循环
Endless loop
C. 8
D. 19
F. 程序运行错误
Execution error
BK 1:
以下关于自攻螺丝与普通螺丝相比的特征描述正确的有哪些？
Which of the following descriptions about the characteristics of self-tapping screws compared with ordinary screws are correct?
A. 紧固力大
Strong tightening force
B. 紧固力小
Small tightening force
C. 适合在金属等硬材料中使用
Suitable for use in hard materials like metal
D. 适合木头和塑料等软质材料
Suitable for soft materials like wood and plastic
E. 几乎可以无限次拆装
Can be disassembled and assembled almost infinitely
BK 2:
下面的代the码输出结果是多少？
What is output of the following code?
A. 3
B. 3.3
C. 3.333333
D. 编译错误
Compilation error
E. 程序运行错误
Runtime error
BK 3:
目前最适合做临时动力储能的电池是 :
What’s the most suitable type of battery for temporarily power storage:
A. 锂电池 Lithium battery
B. 干电池 Dry battery
C. 铅蓄电池 Lead acid battery
D. 镍氢电池 NiMH battery
BK 4:
C++ 编程语言中，关于while loop与 for loop说法正确的是？
In the C++ programming language, which statement is correct about while loop and for loop?
A. 有些特定的功能只能用while loop编写，for loop无法做到
Some specific functions can only be written using while loop, which cannot be done by for loop.
B. 有些特定的功能只能用for loop编写，while loop无法做到
Some specific functions can only be written using for loop, which cannot be done by while loop.
C. while loop与for loop各具特点，不具有可比性
while loop and for loop have their own characteristics and are not comparable.
D. while loop与for loop是等价的
while loop and for loop are equivalent.
