假定类TEST中重载运算符＜＜，则运算符＜＜在类TEST中正确的声明形式为（ ） A: ostream& operator＜＜(ostream& output, const TEST& obj); B: friend ostream& operator＜＜(ostream& output, const TEST& obj); C: ostream& operator＜＜(const TEST& obj); D: friend ostream& operator＜＜(const TEST& obj);

友元运算obj1>obj2被C++编译器解释为： A: operator>(obj1,obj2) B: >(obj1,obj2) C: obj2.operator>(obj1) D: obj1.operator>(obj2)

友元运算符。obj1＞obj2被C++编译器解释为( )。 A: operator＞(obj1,obj2) B: ＞(obj1，obj2) C: obj2．operator＞(obj1) D: obj1.operator＞(obj2)

‎友元运算符obj1>obj2被C++编译器解释为（）。‎ A: operator>（obj1,obj2） B: >(obj1,obj2) C: obj2.operator>(obj1) D: obj1.operator(obj2)

友元运算符表达式obj1>obj2被C++编译器解释为。 A: operator>(obj1,obj2) B: >(obj1,obj2) C: obj2.operator>(obj1) D: obj1.operator>(obj2)

运算符重载测验: 为类ABC定义重载运算符“+”，下列哪种定义形式是正确的？（） A: 定义为类ABC的函数成员： void operator +( ){......} B: 定义为类ABC的函数成员： ABC operator +( ABC obj ){......} C: 定义为类ABC的函数成员： ABC operator +( ABC obj1, ABC obj2 ){......} D: 定义为类ABC的友元函数： ABC operator +( ABC obj ){......}

Set X_i=(x_i (1),x_i (2),⋯,x_i (n)) as the behavior sequence of factor X_i, D_1 as the sequence operator, and X_i D_1=(x_i (1)d_1,x_i (2)d_1,⋯,x_i (n)d_1), where x_i (k)d_1=x_i (k)/x_i (1); x_i (1)≠0, k=1,2,⋯,n, then D_1 is A: A. Initial valued operator B: B. Averaging operator C: C. Interval valued operator D: D. Invert operator

Operator: ( ) A: An operator is a DNA region that is working with promoter for genes to express. B: An operator is a DNA region at 5’ of a gene for a repressor to bind to prevent gene expression. C: An operator is a repressor protein to help genes to express. D: An operator is a repressor protein to inhibit genes to express.

It is for this reason that Laplace’s operator(拉氏算子) is sometimes written as ▽2(read triangle squared).

1、In MATLAB, the right division operator (/) and the left division operator (\) are equivalent.