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单选题
机翼防冰活门下游发生漏气（后设备舱、中央机身或机翼），防冰和泄漏探测控制器（AILC）将自动关闭机翼防冰活门并显示（ ）警告信息。If a leak occurs downstream of the wing anti-icing valve (aft equipment bay, center fuselage or wings), the AILC will automatically close both wing anti-icing valves and display the（ ）warning message.
A
L BLEED DUCT
B
ANTI-ICE DUCT
C
L BLEED LOOP
D
R BLEED DUCT
答案解析
正确答案：B
