判断题
三个辅助逆变器严重故障，空调机组降级运行。
发布日期：2021-03-22
对
错
试题解析
空气处理机组
全空气系统中，送入各个区（或房间）的空气在机房内集中处理。对空气进行处理的设备称为空气处理机组，或称空调机组。
- 中文名
- 空气处理机组
- 又称
- 空调机组
- 条件
- 全空气系统
- 外文名
- Air handling unit
- 作用
- 对空气进行集中处理
- 包括
- 风机、加热器、冷却器以及过滤器
逆变器
逆变器是把直流电能（电池、蓄电瓶）转变成定频定压或调频调压交流电（一般为220V,50Hz正弦波）的转换器。它由逆变桥、控制逻辑和滤波电路组成。广泛适用于空调、家庭影院、电动砂轮、电动工具、缝纫机、DVD、VCD、电脑、电视、洗衣机、抽油烟机、冰箱，录像机、按摩器、风扇、照明等。在国外因汽车的普及率较高外出工作或外出旅游即可用逆变器连接蓄电池带动电器及各种工具工作。通过点烟器输出的车载逆变是20W 、 40W、 80W、 120W到150W 功率规格。再大一些功率逆变电源要通过连接线接到电瓶上。把家用电器连接到电源转换器的输出端就能在汽车内使用各种电器。可使用的电器有：手机、笔记本电脑、数码摄像机、照像机、照明灯、电动剃须刀、CD机、游戏机、掌上电脑、电动工具、车载冰箱及各种旅游、野营、医疗急救电器等。
- 中文名
- 逆变器
- 别名
- 变流器、反流器
- 外文名
- inverter
- 分类
- 半桥逆变器、全桥逆变器 等
三个
《三个》陈壹千，作曲 : 陈壹千，作词 : 陈壹千。
- 中文名
- 三个
- 歌曲时长
- 04：15
- 歌曲原唱
- 陈壹千
- 谱曲
- 陈壹千
- 歌曲语言
- 中文
- 所属专辑
- 二十出头
- 发行时间
- 2019-7-1
- 填词
- 陈壹千
- 音乐风格
- pop流行
题王网让考试变得更简单
扫码关注题王，更多免费功能准备上线！
此试题出现在
Directions:In this section, there is one passage followed by a summary. Read the passage carefully and complete the summary by choosing no more than three words from the passage. Remember to write the answers on the Answer Sheet. Questions 1-5 are based on the following passage.Developing Environmental Management Strategies Strong and sustainable economic activity depends on healthy environmental management. It is being increasingly recognized by the public, government and industry that there is no need to shift smoothly from a “react and cure” approach to an “anticipate and prevent” approach. The mechanism governing this change started to appear three to four years ago and the momentum for change has been gathering steadily ever since. Whilst the need to embrace these changes is almost universally accepted, the mechanisms for change and the priorities for action have been far from clear. The public and the media point to anecdotal evidence of lack of progress, or setbacks, over a bewildering range of topics. These incidents are catalogued by local and national pressure groups to enhance their own campaigns for change. The Government, under pressure from the European Community, has introduced legislation which, although progressive, often appears to industry to be fragmented and difficult to digest. There is, therefore, a clear and often expressed need on the part of British and European management for techniques to identify and prioritize the key environmental issues for allocation of resources and action. The technique emerging as the most effective is a strategy which involves the formulation of a policy statement setting out the organization’s philosophy on the environment and the aims to be achieved. A detailed assessment of the environmental status and performance of the operation is then undertaken, key issues identified and targets set. The performance of the operation or unit is regularly audited to measure progress towards the targets set. This environmental strategy is often called an Environmental Management System or simply referred to as an Environmental Audit. Summary: There has been a steady movement towards more efficient, proactive environmental management. Whilst the 1 s generally accepted, the means have yet to be agreed upon. Attempts at introducing 2 have, so far, been unsatisfactory. Techniques are currently being defined for allocating 3 or action on key environmental issues. The most useful approach is to draw up a 4 which clarifies the environmental attitudes and aims of the organization. Performance and progress towards these targets can then be measured. A detailed evaluation or 5 s regularly carried out.
集气罐两个堵板的厚度为（）。
健康行为要做到哪“四勤”？
电话闭塞时，因故不能接、发列车时，由提出不能接发列车一方发出电话电报号码做为取消闭塞的依据。
1997年1月1日某建设项目的环境影响评价报告书批准立项，则该项目无组织排放二氧化硫的监控浓度限值是（）。
砖墙砌体施工过程为：抄平、弹线、摆砖样、立皮数杆、砌筑、勾缝。
呼吸衰竭时，临床上最早出现的症状是（）
粗糙界面
双尾检验
现代教学技术是教学的（）。
暂无相关推荐~