Prize-winning Quiz on Coal Chemical Engineering Knowledge 19
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1. The ( ) of the total power and the useful power input by the motor is called the motor’s power factor. A product, B sum, C ratio, D difference. 2. For I-series regulators, what is the relationship between the proportional band and the proportional action? A. The smaller the proportional band value, the weaker the proportional action. B. The smaller the proportional band value, the stronger the proportional action. C. The larger the proportional band value, the weaker the proportional action. D. The larger the proportional band value, the stronger the proportional action. 3. The maximum scale limit on a pressure gauge should be at （） of the highest pressure. A 2 times B 1 time C 5 times D 2.5 times 4. The basic principles for formulating environmental laws in our country are ( ), ( ), ( ). 5. Which types of fires can be extinguished with a 1211 fire extinguisher? Answer key: 1. C 2. C 3. A 4. Combine prevention and control, give priority to prevention, and adopt comprehensive management. 5. Suitable for extinguishing fires involving electrical equipment, oils, precision instruments, natural gas, etc. Last edited by wbp on 2009-4-19 16:59.]
The 1211 fire extinguisher has been phased out due to environmental concerns.
1、C 2、A 3、A 4、The basic principles of China’s environmental regulations mainly include: the principle of coordinating environmental protection with economic and social development； The principles of prevention first, integration of prevention and control, and comprehensive management ； Principle of comprehensive utilization and turning harm into benefit ； The principle of protecting the environment through scientific progress ； The principle of relying on the public to protect the environment ； “Principles such as “whoever pollutes must clean it up” and “whoever develops must protect it”. 5. The 1211 fire extinguisher is mainly suitable for extinguishing incipient fires involving flammable and combustible liquids, gases, and electrical equipment (i.e., Class B, Class C, and Class D fires) ； It can also be used to extinguish surface fires (i.e., Class A) on solid materials such as wood, bamboo, fabrics, and paper ； It can also be used to extinguish incipient fires in precision instruments, warehouses containing valuable items, precious cultural relics, books and archives, as well as electrical equipment and instruments ； It can also extinguish incipient fires in aircraft, ships, vehicles, oil depots, hotels, and other locations.
1C 2A 3A 4 Principles for the coordinated development of economic construction and environmental protection – Principles of prevention first, combination of prevention and control, and comprehensive management; Principle that those who utilize resources are responsible for their protection; Principle that those who cause pollution must address it 5