At a basic level, cloud computing is simply a means of delivering IT resources as （）. Almost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking, programming tools, even communication services and collaboration （）. Cloud computing began as large-scale Internet service providers such as Google, Amazon, and others built out their infrastructure. An architecture emerged: massively scaled, （） distributed system resources, abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on （） "somewhere on the Intemet" and the application runs on both the "cloud servers" and the user's browser. Both clouds and grids are built to scale horizontally very efficiently. Both are built towithstand failures of （） elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs, with a defined start and end point, cloud servics can be continuous. What's more, clouds expand the types of resources available——file storage, databases, and Web services——and extend the applicability to Web and enterprise applications.

In this architecture, the data is mostly resident on （） "somewhere on the Intemet" and the application runs on both the "cloud servers" and the user's browser

A．clients

B．middleware

C．servers

D．hard disks

患者男性，39岁，65kg。因腹膜后肿瘤入院手术，入院时血压120/70mmHg，脉率68次/分钟，呼吸14次/分钟，心、肺、肝、肾功能正常，血红蛋白130g/L，凝血功能正常，估计手术较困难，失血较多，拟采取血液保护措施。

提示：本例属于大量输血。对大量输血处理的患者，应采取的措施有（）

A.每输1000ml血补充5%碳酸氢钠50ml

B.维持正常范围酸碱平衡

C.保温

D.保持Hb在80g/L以上

E.及时补充新鲜水冻血浆

F.及时补充浓缩血小板

G.维持正常血容量

H.维持适当尿量

I.监测凝血机制