【单选题】Certification of airworthiness is initially conferred by a certificate of airworthiness from a national aviation authority, and is maintained by performing the required maintenance actions. airworthin...
A.
Airworthiness is the measure of an aircraft's suitability for safe flight
B.
a special aircraft used for taking people to hospital
C.
a place where planes take off and land, with buildings for passengers to wait in
D.
a place where planes can fly from, especially one used by military planes
【简答题】听对话录音中有一段对话,听对话两遍后,从1-5各小题的A、B、C三个选项中选出能回答所给问题的正确答案。 1. How was Emily's school day? A. Terrible. B. Not too bad. C. Fun 2. What did she make at school? A. Paper planes B. Paper elephant C. Paper bikes...
【简答题】Write down the words according to the definitions. _________________: move or change from one vehicle to another in the course of a journey ________________: a raised flat suce built along the side...