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单选题
＇BLEED MISCONFIG＇警戒信息指示：＇BLEED MISCONFIG＇ caution message indicates:
A
人工模式下，不正确的引气构型（包括APU）。（APU LCV 打开，发动机引气关闭）。人工选择APU作为引气源时，任意一个机翼或整流罩防冰电门选择接通。 Incorrect bleed configuration (including APU) when in manual mode. (APU LCV open, engine bleeds closed).APU is manually selected as the bleed source and either wing or cowl anti-ice switches selected on.
B
隔离活门失效在开位或关位。 Isolation valve failed open or closed.
C
引气泄露后引气关闭且系统未选择关闭。Bleed shutdown after bleed leak and system not selected off.
D
在通电自检测试中（PBIT），左引气管路的漏气双探测环路失效。 Loss of both leak detection loops in left bleed ducting during PBIT.
答案解析
正确答案：A
