短时强降雨

某信用社2005年末储蓄达1198亿元，比2004年末增加45亿元，增加了百分之几？正确列式是[     ]

A．45÷1198×100%    

B．45÷（1198 -45）×100%   

C．45÷（1198+45）×100%

Consider a 1-year quarterly-pay $1000000 equity swap based on 90-day London Inter-bank Offered Rate (LIBOR) and an index return. Current LIBOR is 3.0 percent and the index is at 840. Below are the index level and LIBOR at each of the four settlement dates on the swap.（）

A.Q₁

B.Q₂

C.Q₃

D.Q₄

雷达收发开关衰老会引起雷达的盲区（）。

A.增大

B.减小

C.不变

D.时大时小

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