百度试题 结果1 题目What is dependent Variable also called? A. the dependent measure B. responding variable C. control variable D. constant variable 相关知识点: 试题来源: 解析 AB 反馈 收藏
What is a variable in research? A. A constant value. B. A factor that can change. C. A research method. D. A conclusion from research. 相关知识点: 试题来源: 解析 B。选项 A,变量不是常量值。选项 C,变量不是研究方法。选项 D,变量不是研究得出的结论。
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D. A variable is used for input while a constant is used for output. 相关知识点: 试题来源: 解析 B。变量和常量的主要区别是变量的值可以改变而常量不能。选项 A 变量和常量都可以存储数字和字符串;选项 C 常量和变量的声明位置不是主要区别;选项 D 变量和常量不是分别用于输入和输出。反馈 收藏 ...
A. A fixed number. B. A constant value. C. A value that can change. D. A known quantity. 相关知识点: 试题来源: 解析 C。在数学建模中,“variable”指的是一个可以变化的值。A 选项固定的数字不是变量;B 选项常量值不是变量;D 选项已知的量也不是变量。反馈...
Listing 3.7 Declaring a Constant Called pi 1: #include<iostream> 2: 3: int main() 4: { 5: using namespace std; 6: 7: const double pi = 22.0 / 7; 8: cout << "The value of constant pi is: " << pi << endl; 9: 10: // Uncomment next line to fail compilation 11: // ...
In mathematics, a constant variable is a variable that has a constant value. That is, it is a variable, such that the value of that variable does not...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your...
Understanding Variable Costs The total expenses incurred by any business consist of variable and fixed costs. Variable costs are dependent on production output or sales. The variable cost of production is a constant amount per unit produced. As the volume of production and output increases, variable...
Constant and Variable Examples Let's explore some simple examples of constants and variables: Constant Examples: The value ofππ(pi): In geometry, the ratio of thecircumference of a circleto its diameter is a constant value, approximately equal to3.141593.14159. Regardless of the size of the...
In the context of C#, a constant is a type of field or local variable whose value is set at compile time and can never be changed at run time. It is similar to a variable by having a name, a value, and a memory location. However, it differs from the variable by its characteristic...