属于旅游交往过程中情感过程的矛盾是（）。
A.理解与误解
B.喜爱与厌恶
C.同调与异调
D.欢迎与排斥
参考答案：B
— What are you going to do this Saturday?
—I _____ yet.[ ]
A. haven't decided
B. won't decide
C. am not decided
D. didn't decide
压焊是焊接过程中, 必须对焊件进行加热并施加压力以完成焊接的方法。
