The FBI and Capitol Police arrested ________ man Friday that they say intended to set off a suicide bomb at ________ U.S. Capitol.

A．a; the

B．a; a

C．the; the

D．/; /

《建筑消防安全检测评价技术规程》规定，水喷雾灭火系统的响应时间，当用于灭火时不应大于（）s

A.15

B.20

C.30

D.45