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【多选题】
Nozzles that capable of implementing thrust vectoring technology includes: ____.
A.
Binary thrust vectoring nozzle
B.
Axisymmetric thrust vectoring nozzle
C.
Adopts baffle behind the nozzle
D.
Steerable vertical take-off and landing nozzle
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【单选题】The thrust generated by propellers of turboprop engines took ____ of the total thrust.
A.
10%
B.
50%
C.
75%
D.
90%
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【单选题】在总账管理系统中,结算方式设置后将在使用()类会计科目填制凭证时使用,并作为银行对账的一个参数。
A.
现金账
B.
银行账
C.
收款
D.
付款
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【判断题】等直圆杆和套筒组成的组合杆两端固定在平板上,当一端平板相对另一端平板转动时,求解该问题的变形协调条件是圆杆和套筒扭转角相同。
A.
正确
B.
错误
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【多选题】Compared with piston engines, the main advantages of turboshaft engines are: ____.
A.
Low fuel consumption
B.
High power
C.
Light weight
D.
Low noise
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【多选题】付款条件将主要在()等表单中被引用。
A.
采购订单
B.
销售订单
C.
采购结算
D.
销售结算
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【判断题】等直圆杆两端固定,在杆上某处作用扭转力偶矩,求解该问题的变形协调条件是两端相对于截面的扭转角大小相等。
A.
正确
B.
错误
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【单选题】When a new mathstopic is introduced,
A.
Astudents answer questions on the board.
B.
Bstudents rely entirely on the textbook.
C.
Cit is carefully and patiently explained to the students.
D.
Dit is usual for students to use extra worksheets.
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【判断题】付款条件一旦被引用,便不能进行修改和删除的操作。
A.
正确
B.
错误
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【单选题】The compression of air is finished in the ____ of ramjet.
A.
Intake ducts
B.
Compressor
C.
Turbines
D.
Nozzle
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【多选题】The characteristics of ramjet includes: ____.
A.
Complex structure
B.
Inefficient when the aircraft is flying at low speed
C.
Good intake and compression performance when the aircraft is flying at low speed
D.
Usually used in combination with other types of engines
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