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单选题
维修手册的索引应与第20部分的基本标准分类兼容。然而，制造商可以省略不适用于其产品的系统或章节，或者在可行的情况下合并系统或章节。
A
A.The index of the maintenance manual shall be comparative to the basic standard category of Part 20. Manufacturers may, however, delete systems or sections that do not apply to their products or, where practicable, combine systems or sections.
B
B.The index for maintenance manuals shall be compatible with the basic standard breakdown of Section 20. However, manufacturers may omit system or chapters that are not applicable to the product or combine system or chapters where it is feasible.
C
C.The basic standard category of Part 20 must conform to the index of the maintenance manual. However, manufacturers may elide systems or sections that are not applied to their products, or incorporate systems or sections where applicable.
答案解析
正确答案：B
相关知识点：
维修手册索引兼容规定
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