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【单选题】
飞行中,受到扰动机翼弯曲上、下振动。如果副翼重心位于转轴的后面,( )
A.
会产生机翼弯曲副翼颤振,导致机翼结构的破坏。
B.
飞行速度小于颤振临界速度时,减振力就小于激振力,机翼弯曲振动会很快收敛。
C.
飞行速度大于颤振临界速度时,减振力小于激振力,机翼弯曲振动会很快收敛。
D.
飞行速度大于颤振临界速度时,减振力小于激振力,就会发生机翼弯曲副翼颤振。
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【单选题】The most serious block to concentration is the ______ which comes not from outside but from within.
A.
intermission
B.
involvement
C.
interruption
D.
intervention
【单选题】在会计年度内, 把收益性支出当作资本性支出处理了,则会:
A.
本年度虚增资产、收益
B.
本年度虚减资产、虚增收益
C.
本年度虚增资产、虚减收益
D.
本年度虚减资产、虚减收益
【单选题】在会计年度内,把收益性支出当作资本性支出处理了,则会:
A.
本年度虚增资产、收益
B.
本年度虚减资产、虚减收益
C.
本年度虚增资产、虚减收益
D.
本年度虚减资产、虚增收益
【单选题】Which of the following statements contains a metaphor?
A.
…,and smiles and love shone from every one of their faces…
B.
…,which was like the hovering of a dragonfly round some water lily…
C.
That dark,tender huntress,So full of fire and yearnin9,had…
D.
In her,pursuing her white love with such wistful fervour…
【单选题】在会计年度内, 把收益性支出当作资本性支出处理了,则会( )
A.
本年度虚增资产、虚减收益
B.
本年度虚增资产、收益
C.
本年度虚减资产、虚增收益
D.
本年度虚减资产、虚减收益
【单选题】Which of the following is NOT mentioned by the author among things that are inherited from ancestors?
A.
Complexion.
B.
Diseases.
C.
Adaptation ability.
D.
Intelligence.
【单选题】The word 'hammock' in this passage means a suspension cage which can be swung to and fro in the air.
A.
Y
B.
N
C.
NG
【判断题】语音代表了一定的语义,是它的“社会性”。
A.
正确
B.
错误
【单选题】Which of the following is not mentioned as a treatment fro epilepsy?
A.
Ketogenic diet.
B.
Antidepressants.
C.
Anticonvulsants.
D.
Nerve stimulation.
【简答题】According to the text, one can expand one's identity [A] by finding a way to stay away fromone's family and community. [B] by combining late-night bullsessions with backyard barbecues. [C] by consulti...
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