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单选题
214、To prevent overheat damage to the wing leading edge, the engine bleed air is given maximum coolingduring ground operations. 为了防止过热损坏机翼前缘，在地面操作时给予发动机引气最大冷却。
A
Prior to ground operations, maximum cooling of the engine bleed air is provided to avoid the overheatdamage to the wing leading edge.
B
To keep the wing leading edge from overheat damage, the engine bleed air has a maximum cooling effectduring ground operations.
C
while the aircraft is operating on the ground, the engine bleed air provides a best cooling to the wingleading edge to renovate the damage due to overheat.
答案解析
正确答案：B
相关知识点：
地面操作防机翼前缘过热
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