已知函数f（x）=﹣$\sqrt{3}$sinx+3cosx，若x₁•x₂＞0，且f（x₁）+f（x₂）=0，则|x₁+x₂|的最小值为（　　）

人大要保持同人民的血肉联系，了解人民的意见，倾听人民的呼声，反映人民的意志，自觉把人大工作置于人民的监督之下。只有这样，人大工作才有坚实的群众基础，才能保持勃勃生机与旺盛活力。这表明必须正确处理（  ）

    BUS SERVICE

    New York City — Brennan, New Jersey

    (Trip time: 30 minutes each way )

    Timetable

    Buses leave the Railway Station, New York 7:00 a.m. and every half-hour thereafter(此后) until 11:30 p.m. (7 days a week).

    Buses leave Brennan Station 20 minutes before and after every hour from 6:20 a.m. to 10:40 p.m. (7 days a week ).

    Evening rush hours(5:00 p.m. to 7:00 p.m.) buses leave the Railway Station, New York every 15 minutes (Monday — Friday).

    Holidays: buses leave every hour on the hour time, each direction.

All tickets must be bought at Window 12, the Railway Station, New York, or at the Brennan Station Window before boarding buses.