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三角测量的网(锁)布设中，对于一、二级小三角的布设，可采用()以近于直伸。
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高层建筑给水铸铁管管道应采用()方式进行连接。
甲机电工程公司于2008年3月3日承建A化工厂的机械设备安装工程。要保证设备安装质量和保证工艺生产线达到安全运行首先要进行机电工程测量，工程测量包括控制网测量和施工过程控制测量两部分内容。它们之间的相互关系是：控制网测量是工程施工的先导，施工过程控制测量是施工进行过程的眼睛，两者的目标，都是为了保证工程质量。
无论是建筑安装还是工业安装的测量，其基本程序正确的是()。
某机电工程安装公司承包了该市某项目的高层建筑给、排水管道安装工程。根据要求，机电安装公司派出两名具有民用、公民建筑机电安装技术的专业人员随同基础施工单位一起工作。由于材料准备的不充分，附件检验不合格的，按照一般要求，在管道安装前重新进行了处理，达到要求后才进行安装。
阀门安装前，应作强度和严密性试验，其中给水、排水、供热及采暖管道阀门的强度试验压力为公称压力的()倍。
2 At the same time, however, some of these applications threaten to unleash forces over which we have no control. In other words, the new technology Man now believes allows him to dominate this wider cosmos could well be a Frankenstein monster waiting to turn on its master.
3 This is an entirely new situation that promises to change many of the perceptions governing life on the planet. The most acute challenges facing the future are likely to be not only those pitting man against his fellow man, but those involving humankind's struggle to preserve the environment and ensure the sustainability of life on earth.
4 A conflict waged to ensure the survival of the human species is bound to bring humans closer together. Technological progress has thus proved to be a double-edged sword, giving rise to a new form. of conflict: a clash between Man and Nature.
5 The new conflict is more dangerous than the traditional one between man and his fellow man, where the protagonists at least shared a common language. But when it comes to the reactions of the ecosystems to the onslaught of modern technology, there is no common language.
6 Nature reacts with weather disturbances, with storms and earthquakes, with mutant viruses and bacteria—that is, with phenomena having no apparent cause and effect relationship with the modern technology that supposedly triggers them.
7 As technology becomes ever more potent and Nature reacts ever more violently, there is an urgent need to rethink how best to deal with the growing contradictions between Man and Nature.
8 For a start, the planet, and hence all its inhabitants, must be perceived as an integral whole, not as a dichotomous mass divided geographically into the rich and developed and the poor and underdeveloped.
9 Today, globalization encompasses the whole world and deals with it as an integral unit. It is no longer possible to say that conflict has shifted from its traditional east-west axis to a north-south axis. The real divide today is between summit and base, between the higher echelons of the international political structure and its grassroots level, between governments and NGOs, between state and civil society, between public and private enterprise.
10 The mesh structure is particularly obvious on the Internet. While it is true that to date the Internet seems to be favouring the most developed sectors of the international community over the less developed, this need not always be the case. Indeed, it could eventually overcome the disparities between the privileged and the underdeveloped.
11 On the other hand, the macro-world in which we live is exposed to distortions because of the unpredictable side-effects of a micro-world we do not and cannot totally control.
12 This raises the need for a global system of checks and balances, for mandatory rules and constraints in our dealings with Nature, in short, for a new type of veto designed to manage what is increasingly becoming a main contradiction of our time: the one between technology and ecology.
13 A new type of international machinery must be set in place to cope with the new challenges. We need a new look at the harnessing of scientific discoveries, to maximize their positive effects for the promotion of humanity as a whole and to minimize their negative effects. We need an authority with veto powers to forbid practices conducive to decreasing the ozone hole, the propagation of AIDS, global warming, desertification—an auth
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