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单选题
一旦设计并得到批准， 就必须建立完整的维修程序，该程序必须以清晰、简明的语言提供给需要的人。
A
Upon designed and approved, a complete maintenance procedures must be established. This procedure must provide in clear, easy language to people who need it.
B
Upon design and approval, the establishment of complex maintenance procedures is a must. This procedure must provide a clear, precise language to those who need it.
C
Once designed and approved, the establishment of thorough maintenance procedures is a must. This procedure must be available in clear, concise language to those who need it.
答案解析
正确答案：C
相关知识点：
维修程序建立语言要求记
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