threats是什么意思及反义词
threats
n. 威胁，恐吓( threat的名词复数 ); 可能造成威胁的人[事，想法]; 恶兆，兆头;
[其他] 原型： threat
没有反义词
Installation和erection的区别
设备安装在招投标文件中最常见的是installation这个词，其实正确的选词应该是erection.
Erection是动词加后缀变化而来的，erect的英文含义是set upright，fix or place inand upright position, set at right angles,中文是向上装配的意思。因此这个词多用于厂房的修建，construction of buildings by builders,电力工程往往是一座发电站的建造，动力锅炉是电厂的核心装置，达五六十米之高，真是平地出高楼。erection这个词来表示电厂建设的安装、建造是一个很恰当的词。当然erection也有puttogether，assemble之意，这只是词义间的相互转换罢了，也是近义词的体现。但总的来讲erection这个词适用范围远比installation这个词要广，它含有installation，而installation却不含有erection，因此大型设备的安装要用erection这个词。
新疆红雁池电厂干式冷却塔的招标文件中对安装所用到的几个英文词，用的就比较规范，特别是对erection和installation之间的关系还作了解释，请看：
The erection comprises installation of the quoted air cooled condenser readyfor operation complete with auxiliary units including supply of the requiredlifting appliances and scaffoldings, supply of site equipment and necessarytools, unloading and storage of the supplied material and the final paint coatof surface other than those galvanized before, but excluding installation of electrical equipment.
从这段文字中可以看出erection包含installation投标的空气冷凝器以及辅助装置。
另外，当我们把安装作为一个集合词，对整体设备进行安装时用的都是erection这个词，例如：Erection will be made by an erection contractor appointed by GEA with all workinvolved supervised by a GEA site manager.During the erection process , quality assurance tests covering essentialplant sections will be made on the basis of an erection test plan , including, but not limited to leak tests of the heat exchanger bundles , thedistribution and dephlegmator piping . Completion of erection is recorded inan erection acceptance report , listing missing and/or outstanding work , ifany.Start of erection on the agreed dateErection of the plant will be made by one or several erection contractorson behalf of GEA . Coordination between the erection contractors and theclient will be made by a site manager appointed by GEA , and this normally is a GEA supervisor.
installation是动名词install加后缀变化而来的，install的英文译义是set inposition and connect or adjust for use , place or fix (apparatus) in positionfor use . install没有erect那样明确地指出安装工作是自下而上的，它可以是一种设备安装，组合到整个系统中去，例如：
Central heating has been installed in our house.After installation of the main and auxiliary condensate pumps , installationof the piping of the condensate system is made.Installation starting at the dephlegmator piping to the condensate tank andfrom there to the main condensate pumps and on to the inter-and aftercondensers of the steam jets to the limit of supply.Installation of the auxiliary condense pipes-starting at the hotwell via theauxiliary condensate pumps to the condensate tank.
对一种简单机具安装或是对一件设备本身的组合，或由若干部件组成一种设备或系统，为此而发生的动作我们常用preassembly（预组装，多在组装志地完成），assembly（组装），mount（装配的）和equip（配置）等词来表示，例如：
On completion of the preassembly , the complete bridge is lifted to itsfinal position with a crane.Assembly of A-frames at ground level.The A-frames are assembled in groups on the ground and lifted by a crane onthe platform , where they are bolted.Mounting of ladders and access platformsLadders and access platforms are mounted during the erection phase of thesteel structure.
A car equipped with air conditioning带空调的车
另外涉及安装的词中还可用到place , bolt , fit等词，这些词可以把安装的动作更具体化。如：
Placing of bridges into leveled supporting points.将（风机）桥架放置到水平支撑点上。
Bolting of base plates to bridge steelworks.将底板用螺栓紧固到风机桥架的刚件上。
Filling of fan blades装配风机叶片
通过以上例句可以看出，erection这个词除了有向上装配，建造的意义外，其含义较为广泛，还应包括installation , assembly , mount等义，而不是后者包括前者。
资产管理公司是什么
资产管理（asset management），通常是指一种“受人之托，代人理财”的信托业务。从这个意义上看，凡是主要从事此类业务的机构或组织都可以称为资产管理公司(asset management companies)。一类进行正常资产管理业务的资产管理公司，没有金融机构许可证；另一类是专门处理金融机构不良资产的金融资产管理公司,持有银行业监督委员会颁发的金融机构许可证。一般资产管理公司经营范围为：投资管理，企业管理，受托资产管理；投资顾问；股权投资；企业资产的重组、并购及项目融资；财务顾问；委托管理股权投资基金；国内贸易；投资兴办实业。（法律、行政法规、国务院决定禁止的项目除外，限制的项目须取得许可后方可经营）。
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-是什么意思
