问题
单项选择题
TOTAL EXPENSES FOR THE HVE DIVISIONSOF COMPANY H
The figure above represents a circle graph of Company H’s total expenses broken down by the expenses for each of its five divisions. If O is the center of the circle and if Company H’s total expenses are $5,400,000, what are the expenses for division R ？（）
(1)x=94
(2)The total expenses for divisions S and T are twice as much as the expenses for division R.
A．条件(1)充分，但条件(2)不充分．
B．条件(2)充分，但条件(1)不充分．
C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D．条件(1)充分，条件(2)也充分．
E．条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
答案
参考答案：A
解析：
(1)充分，根据x=94，其中x为R扇形的圆心角，可以得到R部的花费[*]，400,000=1,410,000；(2)不充分，因为根据S和T的花费是R部花费的2倍，即S+T=2R无法说明R到底在圆中占多大比例。