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单选题
设计机构必须批准对修复方案的更改。
A
The design authority must report all related questions about the repair plan.
B
The design authority must give approval to changes that you make to the repair scheme.
C
The design authority may reply the repair work that you will do according to the scheme.
答案解析
正确答案：B
相关知识点：
设计机构批修复更改，选design authority...approval
