问题
单项选择题
相同条件下，（）发动机在起飞状态时的耗油率最低。
A.涡喷
B.涡扇
C.涡桨
D.涡轴
答案
参考答案：D
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相同条件下，（）发动机在起飞状态时的耗油率最低。
A.涡喷
B.涡扇
C.涡桨
D.涡轴
参考答案：D
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