男性45岁。诊断风湿性心脏病二尖瓣病5年。房颤半年,为纠正房颤来院。
以后维持需多长时间()
A.半年
B.1年
C.不需继续应用
D.长期应用
E.1年半
参考答案:D
After the six-party talk in Beijing, an agreement was reached _________ that North Korea would abandon _________ nuclear weapons.
A.stating; to develop
B.stating; developing
C.to state; to develop
D.states; developing
已知函数f(x)为偶函数,且f(2+x)=f(2-x),当-2≤x≤0时f(x)=2*,又当n∈N×时an=f(n),则a2010=______.