题目内容
Prior to starting the engines, all items and materials should be arranged in such a way that they will be readily _____ and convenient to use.
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The rotation beacon and position lights should be turned on to ______ persons to keep clear of the propeller.
Pilots need to take extra caution at night to assure the _____ area is clear.
The pilots need to taxi carefully and slowly in ______ areas.
It is recommended that unnecessary _______ equipment be turned off before start-up.
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