中学数学研究的基本特点包括() ["综合性","实践性","发展性","理论性"]
客户管理指导下的企业销售额增长来自两个方面()。 ["尽力给顾客折扣","尽力给顾客额外服务","多搞促销活动","较大规模的客户让渡价值","企业努力促成的中小规模的客户升级"]
群体性突发事件应如何处理?
The strength of a deck will be increased by adding(). ["camber","deck beam brackets","hatch beams","sheer"]
国家超级计算长沙中心已建成运行,运算能力扩容至每秒300万亿次,成为我国第()个投入实际运行的国家级超算中心。 ["1","2","3","4"]
液片泵的主要零部件有哪些?