1, sanitation is a sanitation industry, mainly including urban streets, roads, public places, water and other areas Wireless charging water charging Clean environment, urban waste, feces and other household waste collection, removal, transportation, transit, treatment, disposal, comprehensive utilization, urban environmental sanitation facilities planning, construction, etc.
2, Question 1: What industry category does sanitation belong to? Sanitation belongs to the category of environmental protection and greening. According to the industry definition and industry evolution rules of developed countries, Fortune China makes a new classification of China's industry: institutions, organizations, administrative agencies of various countries in China, trading companies, economic organizations, associations, and their wireless charging water charging Other organization.
3. Environmental health management service industry. The sanitation company belongs to the environmental health management service industry in the environmental protection industry. The environmental health management service industry refers to the industry that provides environmental health management and maintenance services for cities, towns and villages, including garbage collection, transportation, treatment and resource utilization, road cleaning and cleaning, public toilet management and maintenance services.
4, the work of sanitation workers should belong to the service industry, not the production and management of products.
5, environmental sanitation belongs to the people's livelihood protection industry, environmental sanitation enterprises belong to the people's livelihood industry, is a long-term defenseProtecting the people's clean, tidy and healthy living environment of the security industry, the attribute of the state of year-round. Therefore, environmental sanitation belongs to the livelihood protection industry.
6, sanitation workers and waiters are service industries, but the treatment of the two service industries has a great difference, which just shows that wireless charging water charging the treatment of the service industry has a high and low difference. Now wireless charging water charging Let's take a look at why waiters and sanitation workers are service industries, but there is a big difference in wagesWorking principle The microcomputer sets the working pressure of the feed pump, which is the user's water pressure. When the domestic water supply, the equipment runs in the low-voltage frequency conversion state, the inverter monitors the pipe network pressure at all times, calculates and compares the feedback value and set value, and automatically reduces the output frequency if the pipe network pressure is higher than the user's required pressure (set pressure), thus reducing the pump speed and reducing the water output.
Variable frequency speed regulation water supply equipment is in the use of pressure or flow sensor feedback constant, by the inverter control motor constantly change the speed of the pump, so as to constantly change the flow of the pump to adapt to the user's water consumption needs of the device.
Variable frequency speed regulation water supply system is the main operating system of XJH variable frequency constant pressure water supply system, its working principle is: the system has two operating modes: manual and automatic. In manual operation, the pump can be started and stopped by pressing the button, and the shoulder stop of ld and 2d can be controlled respectively according to the need. This method is mainly used for equipment debugging and troubleshooting.
Water supply pressure reducing valve is a valve that reduces the water pressure in the water supply pipeline, and its principle is to achieve the purpose of reducing pressure by changing the water pressure or enhancing the local water head loss. The specific action program is to stabilize the inlet pressure to a certain required outlet through the throttling of the opening and closing partsBasic knowledge of designing and maintaining power conversion facilities. Chapter 7: Relay protection - Important devices to protect power equipment from failure damage. Chapter 8: Substation secondary loop, power management system - the core component of power operation monitoring and automation. Chapter 9: Electric Drive and control - Technology for power transmission and precise control of machines and equipment.
2, the first volume includes the content of electrical primary professional and factory primary professional, the second volume includes electrical secondary professional, factory secondary professional, system secondary professional and small unit electrical part design content.
3,The electrical equipment Manual of power engineering is a reference book that complements the Design Manual of Power Engineering. It is divided into two parts: electrical primary equipment and electrical secondary equipment. Among them, the electrical secondary part is the second volume of the manual, which describes the various key equipment in detail.
4, special system: involving fire alarm system, communication wiring technology, cable laying methods, as well as equipment room and access equipment detailed planning and testing. Other special applications: The electrical design of specific scenarios such as mineral insulated cables, fire pumps, VFD rooftop AHU wiring, as well as motor control and elevator call systems are discussedSystem and medium voltage cable engineering data.
5, from the "Power Engineering Electrical Design Manual". This textbook systematically introduces the design content and design method of the electrical specialty of thermal power plant and substation, which is divided into two volumes. The first volume includes the content of electrical primary professional and factory primary professional, and the second volume includes the content of electrical secondary professional, factory secondary professional, system secondary professional and electrical part design of small units.
6, distribution substation, analysis of the important role of power conversion facilities. Short-circuit current calculation and high-voltage appliance selection, explaining the core elements of electrical safety. Relay protection, IISecondary loop and electrical measurement, in-depth study of power system security technology. Prepare your own emergency power supply and explore the power supply solutions in emergency situations. ... Up to the last chapter, integrated wiring system and intelligent system integration show the cutting-edge trends of modern building electrical design.
The business scope of industrial companies is wide, including but not limited to manufacturing, trade, service, science and technology research and development and other fields. In manufacturing, industrial companies can be engaged in the production and processing of various productsSuch as electronic products, machinery and equipment, chemical products, food and beverage. For example, they can produce smartphones, computer hardware, auto parts, medical devices and other products.
The business scope of Chengdu Jingya Technology Industrial Co., Ltd. is: development, research, installation and sales of electronic computer software, hardware and network engineering; Wholesale and retail: electronic components and equipment, general electrical appliances and machinery (excluding automobiles), air conditioning equipment. In Sichuan Province, the total registered capital of companies with similar business scope is 819.33 million yuan, and the main capital is concentrated in enterprises with scale of 1-10 million yuan and 10-50 million yuanAnd there were 226 of them.
The business scope of Shaanxi Huaqin Technology Industrial Co., Ltd. is: new stealth materials, camouflage materials, heat protection materials and their products research and development, production and sales; Special new material technology research and development, technical services; R&d, production and complete sales of mechanical and electrical equipment. (For projects subject to approval according to law, business activities can only be carried out after approval by relevant departments).
The scope of business of different types of technology limited companies is also different, taking the scope of business of network technology limited company as an example: e-commerce, computer technology, network technology, communication technology in the field of technologyArt development, technology transfer, technical consulting, technical services, animation production.
The business scope of Hangzhou Jiuji Technology Industrial Co., Ltd. is: production: special textiles, knitwear, crafts, other stitched products, clothing, accessories and corresponding packaging materials; Selling self-produced products; Anti-insect, anti-mold, anti-bacteria, moisture-proof, anti-electromagnetic wave high-tech fabrics and new technology development of vending machines (except those prohibited and restricted by the state) (according to law to be approved by the relevant departments before the approval of business activities).
Sales: Business scope to write four science and technology, information, environmental protection, networkTechnical development, technical consultation, technical service, technical consultation, toys, clothing, shoes and hats, watches and glasses and accessories, flowers and bonsai, paper products, cultural and educational office supplies, photographic equipment, sporting goods, furniture, hardware and electrical, building hardware, plumbing equipment, cooling equipment, household appliances.