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单选题
1210、The document points out that the FAA should be contacted prior to any alterations on airp1ane toinsure that airworthiness of the airplane is not violated.
A
It is stated int the document that you should inform the FAA about the alterations you＇ll perform on theairplane to insure the airworthiness of the airplane.
B
The document says that the FAA should be involved in any alterations on airplane so to insure that theairplane will not violate any airworthiness regulations.
C
The document sets forth that you should contact the FAA before any alterations on airp1ane to makesures that the airp1anel is airworthy continuously.
答案解析
正确答案：C
相关知识点：
确保探头温度超500℃
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