在困难山区沿二等和二等以上水准路线的水准点处应布设加密重力点，加密重力点相对于起算点

细胞膜是组成细胞的重要结构，它的主要功能是[ ]

A．将细胞内、外环境分隔开  

B．不让细胞内的物质排出  

C．阻止物质进入细胞  

D．控制物质进出细胞

At a basic level,cloud computing is simply a means of delivering ITresources as ____(71)___.Almost all IT resources can be belivered as a cloud service:applications,compute power,storage capacity,networking,programming tools,even communication services and collaboration ____(72)____. Cloud computing began as large-scale Internet service providers such as Google,Amazon,and others built out their infrastructure.Anarchitecture emerged:massively scaled,____(73)____ distributed system resources,abstracted as virtual IT services and managed as continuously configured,pooled resources.In this architecture,the data is mostly resident on ___(74)___ "somewhere on the Internet" 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 to withstand failures of ___(75)___ 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 services 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.

（73）处填（）。

A．horizontally

B．vertically

C．inclined

D．decreasingly

煤粉分离器的作用是什么？

关于改变或者撤销法律、法规、自治条例和单行条例、规章的权限，下列哪一选项符合《立法法》的规定( )

A．全国人民代表大会有权改变或者撤销全国人民代表大会常务委员会批准的违背《宪法》和《立法法》相关规定的自治条例和单行条例

B．省、自治区、直辖市的人民代表大会有权改变或者撤销其常务委员会制定的和批准的不适当的地方性法规

C．地方人民代表大会常务委员会有权改变或者撤销本级人民政府制定的不适当的规章

D．授权机关有权改变被授权机关制定的超越授权范围或者违背授权目的的法规

女性，60岁，3年来右上腹隐痛，厌油腻，5小时来突感上腹痛，呈持续性，阵发性加重，呕吐3次胃内容物，寒战发热。急诊查体：血压80/60mmHg，心率124次/分，神清，迟钝，淡漠，上腹部轻压痛，巩膜无黄染。化验：白细胞15.6×10 9/L，中性粒细胞89%，血TBil47.8μmo/L，Bi132.5μmo/L。B超：胆囊5cm×3cm，壁0.6cm，内有多个光团，伴声影，直径0.4～0.6cm，肝内胆管不扩张，肝外胆管直径0.8cm，诊断应考虑

A．急性爆发性肝炎

B．急性化脓性梗阻性胆管炎

C．慢性胆囊炎急性发作

D．急性胆管炎

E．急性胰腺炎