特勤消防站移动式消防炮（手动炮、遥控炮、自摆炮等）应配备（）座。
A.2
B.3
C.4
D.5
参考答案：B
证券投资基金银行存款账户可以以托管人名义在银行开立。( )
Given investors require an annual return of 12.5 percent, a perpetual bond (i. e. , a bond with no maturity/due date) that pays $ 87.50 a year in interest should be valued at :（）
A. $1093.
B. $875.
C. $700.
