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单选题
如果委任工程代表的设计批准超出其正常授权范围，那么各设计批准只能由所了解的航空器审定办公室按照情况逐一授权。
A
A.If design appraisals by a DER is beyond his normal apprvoal, each appraisal can only be authorized by the known ACO according to current condition.
B
B.Design approvals by a DER that are outside his normal authorization may only be authorized by the cognizant ACO on a case by case basis.
C
C.The familiar ACO can approve each designation approval one one one according to condition if designation approval by a DER is outside his normal range.
答案解析
正确答案：B
相关知识点：
DER设计批准授权考点
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