Asthma is a Major Public Health Problem Nearly 5 million children have asthma(6.9% of children under 18) It is one of the most common chronic childhood illnesses It is a leading cause of school absences

Definitions Seizure(发作): sudden attack, spasm,or convulsion, as in epilepsy or another disorder Epileptic seizure(癫痫样发作): transient episode of abnormal and excessive neuronal activity in the brain that is apparent either to the subject or an observer

胎儿窘迫的危害降低围生儿死亡及后遗症的意义

1. 外阴及阴道炎症 2. 子宫颈炎症 3. 盆腔炎症

定 义(Definition)妊娠20周以后或分 娩期，正常位置的 胎盘在胎儿娩出前 , 部分或全部从子宫 壁剥离

市场渗透: increase sales to present customers with current products. How? Cut prices, increase advertising, get products into more stores. 市场开发: develop new markets with current products. How? Identify new demographic or geographic markets

重庆工商大学：《计量经济学》课程教学资源（讲义）EViews应用基础（沈民、席尧生）

重庆工商大学：《计量经济学》课程教学资源（讲义）第2章 一元线性回归 The Simple Linear Regression Model

Anything that can be offered to a market for attention, acquisition, use or consumption. Satisfies a want or a need. Includes: –Physical Products –Services –Persons –Places

Any form of nonpersonal presentation and promotion of ideas, goods, or services by an identified sponsor. U.S. advertisers spend in excess of $175 billion each year. Advertising is used by: – Business firms, –Nonprofit organizations, –Professionals