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【单选题】
使飞机绕横轴做旋转运动的力矩称为
A.
俯仰力矩
B.
滚转力矩
C.
偏航力矩
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参考答案:
举一反三
【单选题】One of the disadvantages of young adults returning to stay with their parents is that ______.
A.
there will inevitably be inconveniences in everyday life
B.
most parents find it difficult to keep a bigger family going
C.
the young adults tend to be overprotected by their parents
D.
public opinion is against young adults staying with their parents
【单选题】在指定的叶片径向位置(通常为100%叶片半径处)叶片弦线与风轮旋转面的夹角叫 ( ) 。
A.
A、攻角 桨距角
B.
冲角
C.
攻角
D.
扭角
【单选题】下列属于稀溶液依数性的是( )
A.
凝固点升高
B.
沸点降低
C.
渗透压
D.
蒸气压升高
【单选题】下列溶液的性质属于稀溶液依数性的是
A.
溶液呈现蓝色
B.
食盐水的沸点比纯水的沸点高
C.
电解质溶液可以导电
D.
乙醇与水混合总体积减少
【单选题】According to the passage, young adults differ from older adults in that ______.
A.
they lose their memory at a slower rate
B.
they rarely realize they have memory problems
C.
their brains can store much more information
D.
all of the above
【单选题】在指定的叶片径向位置(通常为 100%叶片半径处)叶片弦线与风轮旋转面的夹角叫 。()
A.
角;
B.
角;
C.
距角;
D.
角。
【单选题】One of the disadvantages of young adults returning to stay with their parents is that ______.
A.
the young adults tend to be overprotected by their parents
B.
most parents find it difficult to keep a bigger family going
C.
there will inevitably be inconveniences in everyday life
D.
public opinion is against young adults staying with their parents.
【判断题】在一个广告周期内,广告频率由低到高,至高峰时戛然而止,节日性广告常用这种形式。()
A.
正确
B.
错误
【单选题】With regard to memory reduction, young adults differ from older adults in that______.
A.
they lose their memory at a slower rate
B.
their brains can store much more information
C.
they rarely realize they have memory problems
D.
they are more likely to remember false information
【单选题】下列不属于稀溶液依数性的是:
A.
凝固点下降
B.
沸点升高
C.
蒸气压下降
D.
浓度下降
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