Scheduled services operate on defined routes for which ______ have been granted by the government or govemments concerned.
A.managements
B.plans
C.brochures
D.licences
正确答案是D
Scheduled services operate on defined routes for which ______ have been granted by the government or govemments concerned.
A.managements
B.plans
C.brochures
D.licences
正确答案是D