Which presents the heirarchical relationship between LVM entities?（） ["VolumeGroup>PhysicalVolume>LogicalVolume>Filesystem","PhysicalVolume>VolumeGroup>LogicalVolume>Filesystem","VolumeGroup>PhysicalVolume>Filesystem>LogicalVolume","PhysicalVolume>VolumeGroup>Filesystem>LogicalVolume"]
采用沼液浸棉种，一般能够有效防治（）病。
安全控制系统在功能上分为6大功能区分别是什么
在大多数企业中普遍存在和被公认的服务与成本的关系是（） ["在物流服务水平一定的情况下，降低物流成本","在提高物流服务水平的同时，增加了物流成本","在物流成本一定的情况下，实现物流服务水准的提高","在降低物流成本的同时，实现较高的物流服务"]
A bank has requested proposals for a storage solution to upgrade their disaster recovery processes for their IBM System z， UNIX， and Microsoft Windows environment. The solution must simulate a multi-site environment and provide the customer the ability to evaluate Metro Mirror， Global Mirror， Global Mirror for z/OS， and FlashCopy. 120 TB physical capacity is required per site. Only Fibre Channel drives can be used. Which solution best meets the specified requirements（） ["two DS8700 systems with two-way processor cards and 600 GB FC drives","two DS8700 systems with four-way processor cards and LPAR","two DS8700 systems with two-way processor cards and two frames per system","two DS8700 systems with four-way processor cards and two frames per system"]
离子饱和度
