灼口综合征的临床表现可有()。
A.烧灼样舌痛
B.舌感觉异常
C.口腔黏膜感觉异常
D.口干、味觉改变
E.头痛、情感变化
参考答案:A, B, C, D, E
Over two hundred years ________ since the United States ________in 1776[ ]
A. have passed; founded
B. has passed; were founded
C. have passed; was founded
D. has passed; was founded
CRH1A(时速250公里)型动车组一级修受电弓两滑板高度差应≤()mm。
A.3
B.5
C.8
D.10