Ⅱ级钢筋受拉区钢筋绑扎接头的最小搭接长度 45d(d 为钢筋直径)。()
参考答案:错误
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。()