- Have you seen_______ boat in my living-room?

- Yes, it's not_______ real one, but it's_______ best model I've ever seen.

A．a, the, a

B．the, the, a

C．a, a, the

D．the, a, the

8259工作在优先级自动循环方式，则IRQ4的中断请求被响应并且服务完毕以后，优先级最高的中断源是（）

A.IRQ₃

B.IRQ₅

C.IRQ₀

D.IRQ₄