题目内容：
民用航空是指使用各类航空器从事除了军事性质以外的所有航空活动。 ( )此题为判断题(对，错)。
参考答案：
选择题：民用航空是指使用各类航空器从事除了军事性质以外的所有航空活动。 ( )
- 题目分类：航空安全员
- 题目类型：选择题
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世界上第一家航空公司是美国飞艇运输公司 。 ( )
世界上第一家航空公司是美国飞艇运输公司 。 ( )
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