[名词解释] 库

当板厚小于等于150mm时，其受压筋间距不应大于（）。 ["100mm","150mm","200mm","300mm"] 燃烧炉正常工作时，工作场所CO含量应＜（）mg/m3。 ["20","30","40"] 库源关系 源 当梁截面宽度为（）时，一般采用双肢箍筋。 ["b≤150mm","150mm＜b＜350mm","b≥350mm","任意"] 库