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);
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);
The -> operator has a higher priority than the increment operator.
The -> operator has a higher priority than the increment operator.
What is the indirection operator? A: & B: * C: -> D: .
What is the indirection operator? A: & B: * C: -> D: .
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 ){......}
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 ){......}
下列碳正离子的稳定性顺序是:( ) A: (1) > (2) > (3) > (4) B: (2) > (4) > (3) > (1) C: (1) > (3) > (2) > (4) D: (2) > (4) > (1) > (3)
下列碳正离子的稳定性顺序是:( ) A: (1) > (2) > (3) > (4) B: (2) > (4) > (3) > (1) C: (1) > (3) > (2) > (4) D: (2) > (4) > (1) > (3)
下面化合物的熔点高低次序是:( ) A: (1)>(3)>(2) B: (3)>(2)>(1) C: (1)>(2)>(3) D: (3)>(1)>(2)
下面化合物的熔点高低次序是:( ) A: (1)>(3)>(2) B: (3)>(2)>(1) C: (1)>(2)>(3) D: (3)>(1)>(2)
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
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
将下列化合物按极性大小排列顺序:(1)CH4 (2)CH3F (3)CH3Cl (4 )CH3Br (5)CH3I A: (1)>(2)>(3)>(4)>(5) B: (5)>(4)>(3)>(2)>(1) C: (2)>(3)>(4)>(5)>(1) D: (3)>(4)>(5)>(1)>(2)
将下列化合物按极性大小排列顺序:(1)CH4 (2)CH3F (3)CH3Cl (4 )CH3Br (5)CH3I A: (1)>(2)>(3)>(4)>(5) B: (5)>(4)>(3)>(2)>(1) C: (2)>(3)>(4)>(5)>(1) D: (3)>(4)>(5)>(1)>(2)
比较下列化合物的碱性强弱(1)脲(2)乙酰胺(3)乙胺(4)丙二酰脲 A: (1)>(2)>(3)>(4) B: (2)>(4)>(3)>(1) C: (3)>(1)>(2)>(4) D: (4)>(2)>(3)>(1)
比较下列化合物的碱性强弱(1)脲(2)乙酰胺(3)乙胺(4)丙二酰脲 A: (1)>(2)>(3)>(4) B: (2)>(4)>(3)>(1) C: (3)>(1)>(2)>(4) D: (4)>(2)>(3)>(1)