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【判断题】
减速机的油量不应超过大齿轮的2/3。
A.
正确
B.
错误
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举一反三
【单选题】Passage 3 Questions 11 to 15 are based on the following passage: Scientists in India have invented a new way to produce electricity. Their invention does not get its power from oil, coal or other fuel...
A.
Because bullocks have long been used by Indian people
B.
Because bullocks walk slowly and are easy to control.
C.
Because there are few non-working bullocks in India
D.
Because there is not enough oil in India.
【单选题】小型低速飞机着陆滑跑的主要减速力是（）
A.
放襟翼产生的空气阻力
B.
刹车时增大的地面摩擦力
C.
发动机的反推力
相关题目：
【单选题】Passage 3 Questions 11 to 15 are based on the following passage: Scientists in India have invented a new way to produce electricity. Their invention does not get its power from oil, coal or other fuel...
A.
Because bullocks have long been used by Indian people
B.
Because bullocks walk slowly and are easy to control.
C.
Because there are few non-working bullocks in India
D.
Because there is not enough oil in India.
【单选题】小型低速飞机着陆滑跑的主要减速力是（）
A.
放襟翼产生的空气阻力
B.
刹车时增大的地面摩擦力
C.
发动机的反推力
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