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【判断题】
我国在北半球,所以在高斯平面直角坐标系中各点的y坐标恒为正值。()
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】在实验研究中,实验者安排、控制与实施的实验条件称为
A.
自变量
B.
因变量
C.
无关变量
D.
中介变量
【判断题】圆轴扭转时横截面上的切应力在横截面上均匀分布
A.
正确
B.
错误
【单选题】What was Britain's strategy during its war with France?
A.
Maintaining its superior sea skills and technology.
B.
Planning an immediate attack.
C.
Keeping a three-to-two advantage over France.
D.
Fighting a defensive war.
【单选题】Ireland is called the Emerald Isle because of
A.
its shape.
B.
its connection with Britain.
C.
its abundant natural resources.
D.
its rich green countryside.
【简答题】请论述实验研究中自变量、因变量和无关变量的关系是什么?
【单选题】在实验研究中有意加以改变、操纵的事物、条件或特征称为
A.
自变量
B.
控制变量
C.
因变量
D.
无关变量
【简答题】What does Britain make you think of? Its royal (王室) family or fish and chips? In fact, Britain is 小题1:f____ for forming queues as well. From the supermarket to the underground, queues are everywhere. ...
【多选题】圆轴扭转时横截面上的切应力
A.
大小均匀分布
B.
方向与半径垂直
C.
大小沿半径线性分布
D.
最大值在截面外边缘
【多选题】圆轴扭转时横截面上的切应力
A.
大小分布均匀
B.
方向与半径垂直
C.
大小沿半径线性分布
D.
最大值在截面外边缘
【单选题】BRITAIN locks up more of its people than any other country in western Europe: 145 out of every 100,000 compared with France's 88 (though a fraction of America's 738). Sentences have got tougher, with ...
A.
Crime is becoming more and more rampant and nasty in Britain.
B.
Crime rate is on the rise in Britain.
C.
The government has done little to crack down on crimes.
D.
Harsh sentence and prisons are not effective in alleviating crimes.
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