骨折的特有体征是
A．患肢循环障碍
B．功能障碍
C．骨擦音和骨擦感
D．疼痛与压痛
E．肿胀与淤斑
参考答案：C
大额支付系统有哪些运行状态？
An analyst does research about the time value of money. An investor deposits $500 million in an account that eams a stated annual rate of 3.5% for the first year and 3.0% for the second year, compounded continuously. If there are no additional deposits or withdraws, the value of the account after two years is closest to:（）
A. $519.05 million.
B. $533.58 million.
C. $536.25 million.
