对于责令限期改正的消防安全违法行为，公安机关消防机构应当自单位责令改正期限届满之日起（）工作日内进行复查。 ["2个","3个","4个","5个"]
固有色是指物体在阳光之下呈现出的颜色。
蕈形泡沫
Although TCP segments differ from UDP segments, they both contain some common fields. What two segments do they share in common?（） [" source address"," options"," sequence number"," sources"," destination port"," checksum"]
在我国提倡的一系列职业道德规范中，属于最基本或者最低层次要求的是（）。
简述法理权威（韦伯）。
