若在类Number中用友元函数重载了乘法运算符“*”,则下列该重载函数说明中正确的是( )。 A: Number& operator*( Number&, Number&); B: Number& operator*( Number&); C: friend Number& operator*( Number&); D: friend Number& operator*( Number&, Number&);

若在类Number中用友元函数重载了乘法运算符“*”,则下列该重载函数说明中正确的是( )。 A: friend Number& operator*( Number&, Number&); B: Number& operator*( Number&, Number&); C: Number& operator*( Number&); D: friend Number& operator*( Number&);

创建一条弧线的函数是（ ）。 A: arc(number x, number y, number r, number sAngle, number eAngle, boolean counterclockwise) B: rect(number x, number y, number width, number height) C: arcTo(number x1, number y1, number x2, number y2, number radius) D: fillRect(number x, number y, number width, number height)

According to recording 4.1, which statement is true? （ ）。 A: Number four and number five. B: Number one and number two. C: Number three and number four. D: Number one and number four.

如果Number=3，下列命题为真。If Number = 3, point out the truth and false of the following statements.Int(Number * Number) = Number * Number

如果Number=7，下列命题为真。If Number = 7, point out the truth or false of the following expressions.Sqrt(Number*Number ) == Int(Sqrt(Number*Number))

_____ people were killed and injured in the earthquake, ______ whom reached several million. A: A number of, the number of B: The number of, a number of C: A great deal of, the number of D: A great many, a number of

设WHERE子句中有条件表达式：numberIN(100，200）,该表达式的含义是（）。 A: number =100 AND number =200 B: number >;=100 AND number <;=200 C: number=100 OR number =200 D: number >;100 AND number <;200

函数arc(number x, number y, number r, number sAngle, number eAngle, boolean counterclockwise)的参数counterclockwise表示（ ）。

According to the ancient book Yi Jing, number “9” is ______. A: odd number B: even number C: yang number D: yin number