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。
What is the correct way to initialize a variable declared with the data type of Book , as a new Book object? A. Book b; B. Book b = new Book(); C. Book b = new Book[]; D. Book b = Book(); 相关知识点: 试题来源: ...
A variable is something that can change or be different, often in experiments or equations, while an attribute is a characteristic or quality of an object or entity.
C. Fewer extent pointers are needed to describe the file and less memory is required to manage the extent maps in the shared pool. D. This feature enables faster file opens because of the reduction in the amount ...
3、 the introduction.3. Which of the following practice we should follow when writing scientific paper in English?A Modesty is a good characteristic in Chinese culture.B When writing scientific paper, we should point out the shortcomings of our research using a specific section.C We should confi...
Variable initialization is the process of assigning an initial value to a variable. This is usually done when the variable is first declared, although it can also be done afterwards, depending on coding language. Variable initialization helps keep track of where each variable's value currently stan...
If name is a string variable, what is the output of the following code? name = "Marian"; cout << "Name: " << name.substr(1, 3) + "sta"; a. Name: Marsta b. Name: arista c. Name: ista d. Name: rsta e. Name: Mar+sta 相关知识点: ...
If the variance of a random variable X is 0, what can be said about the values of X? A. They are all equal. B. They are all different. C. They are randomly distributed. D. They follow a normal distribution. 相关知识点:
What invariably occurs is that it is the variable-that make our life vary from bad to good.让我们的生活在好坏之间变换的变量是经常发生的。（What invariably occurs） is that it is the variable 主语从句 the variable-（that make our life vary from bad to good）同位语从句 ...
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 costs will also increase. Conversely, when fewer products are produced, the variable costs associated with production will consequently ...