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Choose THREE letters, A-G. Write your answers in boxes 7-9 on your answe
Choose THREE letters, A-G. Write your answers in boxes 7-9 on your answe
游客
2025-02-17
8
管理
问题
Choose THREE letters, A-G.
Write your answers in boxes 7-9 on your answer sheet.
Which THREE of the following seven pieces of safety equipment are suggested for use with a hot air balloon?
A.Drop line
B.Gas valve
C.Piezo ignition
D.Synthetic clothing
E.Fire-proof gloves
F.Flint spark lighter
G.Propane combustion [br] Frequent ______ is important: fixing or changing faulty parts of the propulsion system when necessary.
选项
答案
maintenance
解析
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