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【单选题】
酸雨是指降水的 PH 值小于A.
6.5
B.
5.6
C.
4.5
D.
3.5
E.
2
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【单选题】. 戴维南定理指出:任何一个线性有源二端网络对外电路来说都可以用一个电压源与电阻的串联模型等效代替,其中串联电阻等于该网络中所有的电压源代之以(),电流源代之以()后所得无源二端网络的等效电阻。
A.
断路、短路
B.
断路、断路
C.
短路、断路
D.
短路、短路
【多选题】下列属于人民幸福内涵的是()
A.
就是人民权利保障更加充分、人人得享共同发展
B.
共同享有同祖国和时代一起成长与进步的机会
C.
中国人民共同享有人生出彩的机会
D.
共同享有梦想成真的机会
【单选题】Neighboring landholders: Air pollution from the giant aluminum refinery that has been built next to our land is killing our plants. Company spokesperson: The refinery is not to blame, since our study ...
A.
The study did not measure the quantity of pollutants emitted into the surrounding air by the aluminum refinery.
B.
The neighboring landholders have made no change in the way they take care of their plants.
C.
Air pollution from the refinery has changed the chemical balance in the plants' environment, allowing the harmful insects and fungi to thrive.
D.
Pollutants that are invisible and odorless are emitted into the surrounding air by the refinery.
E.
The various species of insects and fungi mentioned in the study have been occasionally found in the locality during the past hundred years.
【简答题】PLX Refinery Co is a large oil refinery business in Kayland. Kayland is a developing country with a large and growing oil exploration and production business which supplies PLX with crude oil. Current...
【多选题】多选:下列属于人民幸福内涵的是( )
A.
就是人民权利保障更加充分、人人得享共同发展
B.
共同享有同祖国和时代一起成长与进步的机会
C.
中国人民共同享有人生出彩的机会
D.
共同享有梦想成真的机会
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