资金是运动的价值，资金的价值是随时间变化而变化的，是时间的函数，随时间的推移而增值，其增值的这部分资金就是原有资金的时间价值资金是运动的价值，资金的价值是随时间变化而变化的，是时间的函数，随时间的推移而增值，其增值的这部分资金就是原有资金的时间价值The respiratory system can be divided into two parts:The upper respiratory tracts:mouth, nose & nasal cavity,pharynx and larynx The lower respiratory tracts:trachea,bronchi,bronchioles,alveoli,diaphragm and lungsFunctionTransports air into the lungs and facilitates the diffusion of oxygen into the blood stream. It also receives waste carbon dioxide from the blood and exhale
