题目内容
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[单选题]
Cell Maximum Transmission Power（小区下行所有物理信道加起来所允许的最大发射功率），以下哪个值得配置是合理的（）
A.43dBm
B.-7dB
C.-3dB
D.53dBm
提问人：网友liu840319
发布时间：2022-01-07
题目内容
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Potassium dichromate and potassium permanganate have over lapping absorption spectra in 1mol·L－1 H2S
Potassium dichromate and potassium permanganate have over lapping absorption spectra in 1mol·L-1H2SO4. K2Cr2O7has an absorption maximum at 440nm，and KMnO4has a band at 545nm. A mixture is analyzed by measuring the absorbance at these two wavelengths with the following result：A440=0.405，A545=0.712 in a 1.00cm cell(approximate；exact length not known). The absorbances of pure solution of K2Cr2O7(1.00×10-3mol·L-1)and KMnO4(2.00×10-4mol·L-1)in 1mol·L-1H2SO4，using the same cell gave the following resuits；
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第3题
For free space transmission, if the transmi power ...
For free space transmission, if the transmi power is
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第4题
Skycell, a major European cell phone manufacturer,...
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第8题
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