【单选题】某旅游团赴成都旅游,因为是旅游旺季,几位游客的住房由标准间降为三人间,引起几人的不满,地陪应该
C.
负责调换,确有困难时,应说明原因并提出补偿条件
【单选题】The pilot in command of an aircraft is the person _______ the aircraft who is responsible for its operation and safety during flight.
【判断题】Only the pilot can make announcements during the whole flight.
【单选题】The pilot in command of an aircraft is the person ______the aircraft who is ultimately responsible for its operation and safety during flight.
【单选题】李阳坐在教室第5行第4列,用(4、5)表示,他的好朋友张明坐在教室的第7行第6列,应当表示为 [ ]
【单选题】词汇与结构 The Pilot in Command (PIC) of an aircraft is the person aboard the aircraft who is ultimately responsible for its ____ and safety during flight.
【简答题】A胚胎第3周 B胚胎第4周 C胚胎第6周 D胚胎第6~7周 E胚胎第7~8周 面部发育起始于