【導(dǎo)讀】(一)調(diào)查背景和意義·········································································1. (二)調(diào)查目的···················································································1. (三)研究設(shè)計(jì)···················································································2. (四)調(diào)查內(nèi)容···················································································3. (五)調(diào)查對象···················································································3. (六)樣本量的確定···················································