【多选题】The value of the Aerodynamic Particle Diameter of a 1μm diameter spherical particle with density 4g/cm 3 is ______. Assume that the Cunningham correctionfactor can be neglected。
【简答题】One truly remarkable achievement that sets us humans apart the 【M1】______ rest of the animal kingdom is our creation and use of language. Although animals can communicate with one another, their limit...