下列（）属于工业生产中的第一类危机源。 ["物体打击","机械伤害","触电","中毒窒息","人的不安全行为"]
企业的外埠存款、银行汇票存款、银行本票存款、信用卡存款、信用保证金存款和存出投资款等也在“银行存款”账户核算。
One of your customer has six sites， three of which process a large amount of traffic among them.He plans to grow the number of sites in the future. Which is the most appropriate design topology？（） [" full mesh"," peer-to-peer"," partial mesh"," hub and spoke"]
简述家庭对儿童心理发展的影响。
工具避孕
石渠阁会议
