【单选题】已知有以下程序 class Point{ private: float x,y ; // 点的坐标 public: Point(float h,float v); }; class Line { private: Point p1,p2; ...... }; 则哪些 Line 类的构造函数定义是正确的( )
B.
Line(Point xp1, Point xp2):p1(xp1),p2(xp2) { }
C.
Line(Point xp1, Point xp2) { p1 = xp1; p2 = xp2; }
D.
Line(double xp1, double yp1, double xp2, double yp2) { p1.x = xp1; p1.y =yp1; p2.x = xp2; p2.y = yp2; }
【判断题】在电容器的串联回路中,等效电容量等于各个电容器电容量之和。
【简答题】化简: sin(π-α) tan(π+α) ? cot( π t -α) sin( π t +α) ? cos(-α) sin(tπ-α) =______.
【单选题】Jim Little believes that ___
A.
the Expo is not attractive to many businessman
B.
The MBA program in Shanghai is the best one in China
C.
the Shanghai Expo will demonstrate the most recent technological marvels
D.
many countries try to impress the Chinese as nice tourist sites
【单选题】盐酸氯丙嗪
D.
巴比妥类药物,且水溶液可吸收二氧化碳而变浑浊
【简答题】英汉互译。 1. that little girl______________ 3. play the zither_____________ 5. 安静_____________ 7. the first boy _____________ 9. the Yellow River _____________ 2. 流行音乐_____________ 4. 弹吉他_____________ 6. ...
【判断题】电容器的并联回路中,等效电容量等于各电容器电容量之和。