The interior of some diesel engine saltwater heat exchangers are protected from corrosion
A. aluminum plates
B. lead cathodes
C. copper baffle plates
D. sacrificial zincs
溜管卸料多用于断面小、钢筋密的浇筑部位,其卸料半径为1~1.5 m。()
直流输送功率是可控的,是通过改变由整流站控制直流电流来实现。()
具有强迫换流的变流器主要用于直流斩波调压及无源逆变等,故大多采用晶闸管作为开关器件。()
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