不定项选择

16x4的ROM只可以实现1个4变量的函数。

A．正确
B．错误

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单项选择题

An investor buys a three- year bond with a 5% coupon rate paid annually. The bond, with a yield- to- maturity of 3%, is purchased at a price of 105.657223 per 100 of par value. Assuming a 5- basis point change in yield- to- maturity, the bond’s approximate modified duration is closest to:

A．2.78
B．2.86
C．5.56