园长为家长提供方便，关心教师的工作、学习生活，尽力为教师教学创造良好的条件，这是园长作为（）角色的体现。 指导者。 学习者。 服务者。 协调者。
While reviewing the MySQL error log, you see occasions where MySQL has exceeded the number of file handles allowed to it by the operating system. Which method will reduce the number of file handles in use?（） Activating the MySQL Enterprise thread pool plugin。 Relocating your data and log files to separate storage devices。 Disconnecting idle localhost client sessions。 Implementing storage engine data compression optio。
不太重要的二类负荷最低应采用（）方式供电。 两个电源。 双回线路。 一回专用线路。 一回T接线路。
影响无形资产评估价值的因素（）。 效益因素。 机会成本。 技术成熟因素。 市场供需状况。
A customer wants to deploy a new CRM application on an 8-way Intel-based server. They plan to upgrade to a 16-way server six months later， because the CRM application will support a larger number of processors. After the upgrade， they will need more I/O slots to support the SAN storage and LAN bandwidth requirements. They are considering either the IBM x445 or the HPQ DL740/DL760G2. Which TWO of the following choices are the key competitive advantages of the IBM x445？（） x445 supports PCI-X adapters。 x445 can scale up to 16 processors。 x445 supports redundant power supplies。 x445 can expand I/O by adding the RXE-100。 x445 comes standard with systems management software。
以下物流服务属于增值性物流服务的是（）
