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单选题
"EMERGENCY EXIT" placard at exit hatch over Left wing is illegible.
A
"EMERGENCY EXIT" placard at exit hatch over Left wing is illegal.
B
"EMERGENCY EXIT" placard at exit hatch over Left wing is not legible.
C
"EMERGENCY EXIT" placard at exit hatch over Left wing is missing.
答案解析
正确答案：B
相关知识点：
左机翼出口应急牌难辨认
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