事业团体的公共关系的原则是优质服务、顾客至上。（）
参考答案：错
The period ranging from 1865 to 1914 has been referred to as ______ in the literary history of the United States.
A．the Age of Enlightenment B．the Age of RomanticismC．New England Transcendentalism D．the Age of Realism
大便出血，血与黏液相混，血色暗红，肛门坠胀，多为（）
A.息肉痔
B.内痔
C.混合痔
D.肛裂
E.锁肛痔
