______ One of the key components of planning a moon landing was the selection and training of flight crews.

中国大学MOOC: Airlines would prefer to ______ rather than retrain crews.

中国大学MOOC: Crew schedulers(调度员) are in charge of assigning crews to operate__________ of the aircraft.

Airlines would prefer to ______ rather than retrain crews. ‍‎‍ A: appoint B: engage C: update D: date

Airlines would prefer to ______ rather than retrain crews. A: appoint B: engage C: update D: date

In senario 3 we know that theImmigration willdo somespot checks(抽查) when there are new crews sign on.

The journalists and Camera crews began to ______in the heat as they stood waiting for the president to appear. A: conspire B: transpire C: perspire D: inspire

China has already spent large amounts of money into space research and has sent 6 crews into space. A: T B: F

The journalists and Camera crews began to ______in the heat as they stood waiting for the president to appear. A: conspire B: transpire C: C. perspire D: D. inspire

Passengers must notify airline crews in advance when carrying baggage in excess of the maximum weight ______ of 60lbs. A: approval B: allowance C: consent D: measures