美国进步主义幼儿园运动的主要领导人是().
参考答案:安娜·布莱恩
(1)已知f(x-2)=3x-5,求f(x);
(2)已知f(1-cos x)=sin2x,求f(x);
(3)若f{f[f(x)]}=27x+26,求一次函数f(x)的解析式.
I’m on fire and have dangerous cargo on board. The most emergent assistance in this case would be().
A.life boat
B.helicopter
C.fire-fighting
D.medicine