非累积优先股票的特点是股息分派以()为界，当年结清
A.每个经营周期
B.每个分配年度
C.每个营业年度
D.每个生产周期
参考答案：C
A figure that can be folded over along a straight line so that the result is two equal halves which are then lying on top of one another with no overlap is said to have a line of symmetry. Which of the following figures has only one line of symmetry
A．Square
B．Circle
C．Equilateral triangle
D．Isosceles triangle
E．(E) Rectangle
