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单选题
243.当正常系统故障,BSCU如何启动备用刹车系统?( )When the normal fault, how BSCU start alternate brake system?
A
打开正常选择活门 open normal selection valve
B
关闭自动选择活门close automatic selector valve
C
关闭正常选择活门 close normal selector valve
答案解析
正确答案：C
解析：
题目解析
当正常系统故障，BSCU如何启动备用刹车系统?
When the normal system faults, how does the Brake System Control Unit (BSCU) start the alternate brake system?
答案解析：C. 关闭正常选择活门
解释：当正常系统故障时，BSCU会关闭正常选择活门（close normal selector valve），从而切换到备用刹车系统。这是为了确保在正常系统出现问题时，飞机仍然能够使用备用刹车系统来实现安全制动。
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