AIM: to inquiry the risk factors of behavior problems in high school students in order to analyze the relation of family type and parents' factors to behavior problems in high school students.
目的：调查中学生行为问题的危险因素，并分析家庭类型及父母因素对中学生行为问题的关系。
The sales records, including but not limited to product name, specification, type, batch, sale destination and quantity, should be kept for inquiry from the very first sale of product in Euro Union.
在欧盟销售第一批或第一件产品起，保持销售记录供查询，包含品名、规格、型号、批号、销售目的地、数量等。
Market Inquiry has great difference, it is influenced by purchase quantity, purchase time, type of payment, enterprise credibility etc;
市场询价差异很大，受采购量、采购时间、付款方式、企业信誉等影响；
Market Inquiry has great difference, it is influenced by purchase quantity, purchase time, type of payment, enterprise credibility etc;
市场询价差异很大，受采购量、采购时间、付款方式、企业信誉等影响；
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