证券投资按投资品种分为交易性金融资产、可供出售金融资产、持有至到期投资和长期股权投资。
Sun Stable is a global insurance company with headquarters located in Houston, Texas. The campus there is made up of a number of office buildings located within the same vicinity. In 2003, a new building, Building 331B was added. The additional building houses approximately 1000 employees. Rather than deploy a private branch exchange (PBX) in the new building, Sun Stable has decided to implement an IP telephony solution. External calls will be carried across a MAN link to another building, where a gateway connects into the worldwide PBX network of Sun Stable. Voice mail and unified messaging components are required and all IP phones and workstations should be on separate VLANs and IP subnets.Which IP telephony deployment best suits their need?（） [" single-site."," multisite with centralized call processing"," multisite with distributed call processing"," clustering over the WAN"]
根据《建筑工程施工质量验收统一验收标准》，下列工程中，属于分项工程的是（）。 ["电气工程","钢筋工程","屋面工程","桩基工程"]
挥发组分的作用
采用预提借款利息，实际支付短期借款利息时，应记入（）账户借方，（）账户贷方。
水如何影响非水相中酶的特性：（）、（）、（）、（），（）。
