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【多选题】
电力系统稳定性是指电力系统受到事故扰动后保持稳定运行的能力。通常根据动态过程的特征和参与动作的元件及控制系统，将稳定性的研究划分为（）A.
静态稳定
B.
暂态稳定
C.
小扰动动态稳定
D.
电压稳定及中长期动态稳定
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举一反三
【单选题】下列关于宏观经济学流派的说法,错误的是()。
A.
不同流派之间观点会有所冲突
B.
每一理论都隐含一系列假设
C.
不同理论间分歧或冲突的实质是彼此隐含的假设不同、适用的现实经济条件不同
D.
在是否主张政府干预经济这一观点上各流派看法一致
【简答题】怎样简便就怎样算． （1）0.25×（4+0.4）+0.9 （2）0.89×1.25-0.09×1.25 （3）104×0.25 （4）40×0.625+0.375×40．
【单选题】When we came to the gate, he stopped _______ me go in first.
A.
to let
B.
to tell
C.
to allow
D.
to ask
【简答题】口算 40×0.5= 2.48÷0.8= 0.5×1.8= 0.84÷7= 0.54÷0.6= 4÷0.25= 3.9÷39= 0.9×0.9= 6.5÷1.3= 1.5×102=
【简答题】Complete the following summary according to the text. Write no more than three words on each line. In the author’s opinion, the family education on 1. to society exerts a strong influence on both him ...
【简答题】直接写出得数． 0.9×8= 1.1×8= 0.25×4= 0.15×40= 2.5×2= 1.25×8= 0.75×2= 12.5×2=
【简答题】直接写出得数。 2.2-1.7= 0.9×99+0.9= 0.25×40= 400÷25÷8= 10- = （ + ）×30=
【简答题】It was midnight in Paris and we were rolling toward Avenue Bosguet. As we came to the Pont Alexandra Ⅲ, the taxi slowed down, for the traffic light was red against us, and then, without stopping, we s...
【简答题】直接写得数。 0.9×99+0.9= 0.25×40= 9.9÷ = 400÷25÷8= 4÷8= - = -0.75-25%= 10- = 1÷ × = 8.75-（3.6+0.75）=
【多选题】Listen to D2 and choose the information you hear. A Steven introduces his friends to Betty. B Both Betty and David like table tennis. C David thinks that climbing mountains is good for health. D Betty...
A.
Steven introduces his friends to Betty.
B.
Both Betty and David like table tennis.
C.
David thinks that climbing mountains is good for health.
D.
Betty suggests that they watch a table tennis match next weekend.
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