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【多选题】
电力系统中性点接地方式有小接地电流系统和大接地电流系统两类，小接地电流系统包括（）的系统A.
中性点经消弧线圈接地
B.
中性点点不接地
C.
中性点直接接地系统
D.
中性点经高阻抗接地
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皮皮学刷刷变学霸
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【单选题】A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By comparing these two temperature readings with a set of tables you can determine the ______.
A.
atmospheric pressure
B.
wind speed
C.
relative humidity and dew point
D.
wind chill factor
【单选题】The sensible heat of air is dependent upon the _____.
A.
dry bulb temperature
B.
wet bulb temperature
C.
saturation temperature
D.
water vapor superheat
【简答题】阅读理解。 About 130 years ago, Thomas Edison of the US invented the light bulb (电灯). Edison's bulb has turned night into day ever since. But today, many want to turn the light off. The European Union (欧盟)...
【简答题】阅读理解。 About 130 years ago,Thomas Edison invented thelight bulb. His bulb turned night into day,but today manypeople want to turn off the light. The European Union( 欧盟) has decided that peo-ple should ...
【简答题】bulb
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