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The world’s largest aircraft has taken to the sky for the first time. The Airlander 10 spent nearly 2 hours in the air, having taken off from Cardington Airfield in Bedfordshire. During its flight, it reached 3,000 feet and performed a series of gentle turns all over a safe area. The aircraft isn’t massive as long as a football field and as tall as a 6 double-decker buses and capable of flying for up to 5 days. It was first developed for the US government as a long-wing spy aircraft. But it was abandoned following budget cutbacks. The aircraft costs 25 million pounds and can carry heavier loads than huge jet planes while also producing less noise and emitting less pollution. The makers believe it’s the future of aircraft, and one day we’ll be using them to go places. But there’s still a long way to go. The Airlander will need to have 200 hours flying time before being allowed to fly by the aviation administration. If it passes through, we can hope we’ll all get some extra leg room. Q5. What do we learn about the first flight of the Airlander 10? Q6. What caused the US government to abandon the Airlander 10 as a spy aircraft? Q7. What is the advantage of Airlander 10 over huge jet planes?
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【判断题】RINEX格式是与接收机有关的数据存储格式。
A.
正确
B.
错误
【简答题】本题为额外加分题,若有课上公布的答案之外的编程方法,请截图或拍照上传。 若你在课堂上因完成速度或创意加分了,请把情况写下来。
【判断题】RINEX格式是与接收机有关的数据存储格式。
A.
正确
B.
错误
【单选题】在齿轮传动中,为了减小动载系数,可采取的措施有( )
A.
提高齿轮的制造精度
B.
减小齿轮的平均单位载荷
C.
减小外加载荷的变化幅度
D.
提高齿轮的圆周速度
【简答题】本题为额外加分题,若有课上公布的答案之外的编程方法,请截图或拍照上传。 若你在课堂上因完成速度或创意加分了,请把情况写下来。
【单选题】目前,中国是世界第二大经济体、第一大工业国、第一大货物贸易国、第一大外汇储备国。改革开放 40 年来,按照可比价格计算,中国国内生产总值年均增长约 9.5% ;以美元计算,中国对外贸易额年均增长 14.5% ,这表明( ) 1 中华民族迎来了从站起来向富起来和强起来的伟大飞跃 2 中国人民的获得感、幸福感、安全感显著增强 3 改革开放强力推动中国发展并取得辉煌成就 4 我国建成了富强民主文明和谐美...
A.
①②
B.
②④
C.
①③
D.
③④
【多选题】咖啡都可以和下列哪些食物搭配?( )
A.
华夫饼
B.
水果
C.
早餐
D.
芝士蛋糕
【多选题】在齿轮传动中,为了减小动载系数,可采取( )、( )。
A.
提高齿轮的制造精度
B.
较小齿轮的平均单位载荷
C.
减小外加载荷的变化幅度
D.
降低齿轮的圆周速度
【单选题】在齿轮传动中,为了减小动载系数,可采取的措施有( )
A.
降低齿轮的制造精度
B.
减小齿轮的平均单位载荷
C.
减小外加载荷的变化幅度
D.
降低齿轮的圆周速度
【单选题】与接收机无关的数据存储格式是(),其已成为实际的通用格式。
A.
RINEX
B.
STH
C.
ZHD
D.
以上均有误
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