单项选择题
787-9刹车执行SB C20648-32-013降低螺钉紧固力矩需将刹车件号升级为()
A.C20599100 Amdt B
B.C20599100 Amdt C
C.C20599100 Amdt D
D.C20599100 Amdt E
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单项选择题
A.C20599100 Amdt B
B.C20599100 Amdt C
C.C20599100 Amdt D
D.C20599100 Amdt E
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