完成下列表格
The number of the volunteers 100 now. And a small number of them already gone to the workplace.
下列各组数中,以a,b,c为边的三角形不是直角三角形的是( )
吸气时,膈肌和胸廓的变化是( )
①膈肌收缩②膈肌舒张③胸廓缩小④胸廓扩大.