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【简答题】
在转速反馈系统中,当电网电压、负载转矩、电动机励磁电流、电枢电阻、测速发电机磁场各量发生变化时,都引起转速变化,问系统对上述各量有无调节能力?为什么?
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反馈参考答案：
举一反三
【单选题】What conclusion did researchers from the University of Illinois draw?
A.
Basal ganglia helped maintain attention.
B.
Fitness enlarged children's basal ganglia.
C.
Overweight affected children's complex memory.
D.
Kids with similar backgrounds performed similarly.
【单选题】下列各项目,在计算应纳税所得额时,应做纳税调增的是( )。
A.
自行研发的无形资产加计摊销
B.
坏账准备的转回
C.
期末其他债权投资的公允价值上升
D.
确认交易性金融负债公允价值上升
【单选题】下列哪项不是均匀流的特征（）。
A.
各过水断面均为平面，并且形状和尺寸沿流程不变
B.
各过水断面上流速分布均相同，断面平均流速也相等
C.
均匀流过水断面上的动水压强分布规律与静水压强分布规律相同，即同一过水断面上各点的测压管水头为一常数
D.
液体的迹线与流线重合
【简答题】新装修的房子里一般甲醛都会有超标，但只要在新房里放一两盆吊兰，甲醛就会被全部吸收。 ( )
【单选题】What conclusion did the writer reach?
A.
He will never be able to sing well.
B.
Some people will never be able to sing.
C.
Learning to sing is a complex and mysterious process.
D.
Everyone can learn to sing, but it takes time.
【单选题】What conclusion did the author draw after the journey?
A.
The America is beautiful.
B.
The America is pretty big, and there are different kinds of people.
C.
Indeed, no matter who you are, you can still depend on the kindness of strangers.
【简答题】What conclusion did the writer draw from the example of his student?
【单选题】What conclusion did the author draw after the eight-month car-free life?
A.
He is better off without a car.
B.
He needs to buy a new car.
C.
Life without a car is a little bit hard.
D.
A car-free life does not suit everyone.
【单选题】What conclusion did the man draw after examining himself?
A.
It was because he was too excited by his findings that his heart beat fast.
B.
He was terminally ill and his heart was going to stop beating.
C.
There was enough evidence that he suffered from scarlet fever.
D.
He should shut his eyes and ignore all the bad news he brought on himself.
相关题目：
【单选题】下列各项目,在计算应纳税所得额时,应做纳税调增的是( )。
A.
自行研发的无形资产加计摊销
B.
坏账准备的转回
C.
期末其他债权投资的公允价值上升
D.
确认交易性金融负债公允价值上升
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