喉癌中哪种类型最多见()
A.声门上型
B.声门型
C.声门下型
D.声门旁型
E.喉部继发癌
参考答案:B
Which word of the following doesn’t have the same stress as the others?
A. Repair. B. Against. C. Magic.
塑料管道是电的不良导体,具有______,常用作______、______的套管。