Use For Use for mechanically generated dusts, mists from processing minerals including coal, iron ore, silica, cotton, flour and certain other substances in concentrations up to ten times the Occupational Exposure Standard or according to local regulations. Do Not Use For Do not use for paint spraying and sandblasting applications or for protecting against gases and vapors. Do not use in atmospheres containing less than 19.5% oxygen, as this respirator does not supply oxygen. Not for use in oil mist atmosphere. Use Limitations 1. The wearer must first be trained in the proper use and fit tested before using this respirator. 2. Do not use this respirator when concentrations of contaminants are immediately dangerous to life or health. 3. Leave the contaminated area immediately if breathing becomes difficult, or dizziness or other distress occurs. 4. Discard and replace respirator if it becomes damaged or breathing resistance becomes excessive. 5. Inspect respirator before each use to ensure it is in good working condition. 6. Do not alter, wash, abuse or misuse this respirator. 7. Do not use with beards or other facial hair or other conditions that prevent a good seal between the face and the sealing edge of the respirator. 8. Can be used up to the limits specified by applicable government regulations for this product. 9. Failure to follow all instructions and warnings on the use of this respirator and/or failure to wear this respirator during all times of exposure can reduce respirator effectiveness and may result in illness or permanent disability 10. Maximum operating temperature: +50°C. Caution Care should be taken when using the product at low temperatures as excessive moisture may cause alves(呼吸阀) to freeze. Storage Conditions and Shelf Life Shelf life of unopened product is 5 years from date of manufacture when stored within temperature range of -20°C to +30°C and at less than 80% relative humidity. Warning This respirator helps protect against certain particles. Misuse can result in sickness or death. For proper use, see supervisor or user instructions in the box or contact 3M Co. Ltd. |
1.The passage mainly tells us _________.
A. what this product is
B. why should we buy this product
C. how to protect us against dusts and mists
D. how to use and store the product properly
2.What is the meaning of the underlined word “respirator” in Paragraph 2?
A. Glasses.
B. Face mask.
C. Protective gloves.
D. Protective clothing.
3.In which condition can this product be stored?
A. Temperature: 50°C; Humidity: 40%
B. Temperature: 50°C; Humidity: 80%
C. Temperature: 25°C; Humidity: 40%
D. Temperature: 25°C; Humidity: 80%
For: Doug Smith, Director of wolf recovery, Yellowstone National Park In the world today there is so much we are losing; more and more species disappear from the earth every year. The time has come to put something back,to restore to treat some of the old wounds enforced on nature over the years. Wolves are animals killing and eating other animals in North America. They play an important role in keeping the continent healthy. Most places don’t have enough wild country to make their restoration possible, which means it’s even more important to restore wolves where conditions are right, places like Yellowstone, which has both a high level of wildness, as well as abundant creatures that wolves hunt and eat for living. Some who oppose wolf restoration have a human centered point of view that the earth is here for humans, we can use it whenever we want and for whatever purpose. But wolves offer us a chance to live another way—a way to learn to live with other life forms. | Against: Larry Bouret, Vice President, Wyoming Farm Bureau What does wolf introduction to Yellowstone mean? To the average citizen it probably just means introducing wolves to Yellowstone. There would be no unfavorable effects because few people live near Yellowstone. But to farmers it means introducing wolves, which wander over vast areas—in and out of the park—onto their farms. Wolves eat meat—as in the cattle, sheep that keep farmers in business. Introduction apparently also means lawsuits by environmental groups attempting to remove livestock from federal lands. To farmers, who own private lands in the same area, it means the possibility of financial ruin. To farmers it is a form of land use restrictions. To farmers introducing wolves means taking away the farmers’ livelihoods without just compensation. Why do people not want a nuclear power plant built in their backyard? For the same reason farmers do not want wolves introduced into their backyard. |
1.What are the two passages mainly about?
A. Whether to remove livestock away from federal lands.
B. Whether to introduce wolves to Yellowstone.
C. How to increase the number of wolves.
D. How to keep the balance of nature.
2.According to the passage Doug Smith is _______.
A. a national park administrator.
B. a wildlife conservationist.
C. an enthusiastic hunter.
D. a private land owner.
3.What are the farmers concerned about?
A. Being controlled by wolves.
B. Having to sell their farmland.
C. Suffering heavy financial loss.
D. Being forced to leave their homes.
4.Why does Larry Bouret mention “nuclear power plant”?
A. To summarize his opinion.
B. To make his view persuasive.
C. To tell the danger of nuclear power plant.
D. To introduce the background of wolf recovery.