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单选题
在此步骤中若探测到裂缝，根据裂缝的长度，运营人必须要在一定的飞行小时内修复。
A
If slats are detected during this procedure, the operator must do the repair in some flight hours depending on the slats depth.
B
If cracks are detected during this procedure, the operator must do the repair in some flight hours depending on the crack length.
C
If scratches are detected during this procedure, the owner must do the repair in some flight hours depending on the scratches length.
答案解析
正确答案：B
相关知识点：
裂缝探测修复考点要记
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