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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.

 
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

What is the meaning of the underlined word “respirator” in Paragraph 2?

A.Glasses.
B.Face mask.
C.Protective gloves.
D.Protective clothing.

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%
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相关试题

Nelson Mandela was a figure of international fame, and many details of his life and career were public knowledge. But here are four things you may not have known about the late South African leader.
1. He was a boxing fan.
In his youth, Nelson Mandela enjoyed boxing and long-distance running. Even during the 27 years he spent in prison, he would exercise every morning. "I did not enjoy the violence of boxing so much as the science of it. I was curious by how one moved one's body to protect oneself, how one used a strategy both to attack and retreat, how one paced oneself over a match," he wrote in his autobiography Long Walk to Freedom.
2. His original name was not Nelson.
Rolihlahla Mandela was nine years old when a teacher at the primary Methodist school where he was studying in Qunu, South Africa, gave him an English name “Nelson” in accordance with the custom to give all school children Christian names.
3. He forgot his glasses when he was released from prison.
Mr. Mandela's release on 11 February 1990 followed years of political pressure against apartheid(种族隔离). Mr. Mandela's reading glasses stayed behind in prison Mr. Mandela and his then-wife Winnie were taken to the centre of Cape Town to address a huge and exciting crowd. But when he pulled out the text of his speech, he realized he had forgotten his glasses and had to borrow Winnie's.
4. He had his own law firm, but it took him years to get a law degree.
Mr. Mandela studied law on and off for 50 years from 1939, failing about half the courses he took. A two-year diploma(学位证书) in law on top of his university degree allowed him to practice, and in August 1952, he and Oliver Tambo set up South Africa's first black law firm, Mandela and Tambo, in Johannesburg. He kept on studying hard to finally secure a law degree while in prison in 1989.
What is the main idea of the passage?

A.Nelson Mandela’s life in the prison.
B.The achievements of Nelson Mandela.
C.Nelson Mandela’s hobbies and career.
D.Unknown things about Nelson Mandela.

Why did Nelson Mandela love boxing?

A.Because he wanted to be a boxer.
B.Because he enjoyed the violence of boxing.
C.Because he appreciated the strategy in boxing.
D.Because he had nothing else to do in the prison.

What happened to Mandela when he was about to give the speech?

A.He broke his glasses into pieces.
B.He had to use his wife’s glasses.
C.He left his own glasses at home.
D.His wife wanted to borrow his glasses.

Which of the following is NOT true according to the passage?

A.Nelson Mandela was not his original name.
B.Nelson Mandela was the name given by his teacher.
C.Nelson Mandela had been studying the law nonstop for 50 years.
D.Nelson Mandela had started his own law firm before he got a law degree.

My father was a St. Bernard (圣伯纳犬), and my mother was a collie (科利牧羊犬). This was what my mother had told me. I did not know these nice differences myself. My mother like to say them and see other dogs look surprised and jealous(嫉妒的), wondering how she got so much education. But, indeed, it was not real education.
She got the words by listening in the dining room and the sitting room when there were people talking, and by going with the children to school and listening there. Whenever she heard a word showing great knowledge, she said it to herself many times so that she could keep it until there was a meeting in the neighbourhood. Then, she would show off her knowledge and surprise them all, from small-sized dogs to large-sized dogs.
If there was a stranger being doubtful and getting his breath to ask her what it meant, she always explained to him in detail. He had never expected this but thought he would make fool of her. However, in the end, he was the one who was fooled. The others knew what was going to happen, because they had experienced that. When she explained the meaning of a big world, no dogs doubted if it was right. It was natural, because, for one thing, she answered very quickly and confidently, and for another, there were no knowledgeable dogs pointing out the answer was wrong.
When I was older, she brought home the word, “unintellectual”, and worked on it very hard all the week at different meetings. It was at this time that I realized she made up a fresh meaning of the same word every time. It showed that she was more calm than knowledgeable.
(From A Dog’s Tale, by Mark Twain)
Why were other dogs jealous of “my” mother?

A.Because her child was not a dog.
B.Because “my” mother knew everything.
C.Because they knew nothing about “me”.
D.Because they thought “my” mother was educated.

Where did “my” mother learn the words?

A.She made up the words by herself.
B.She learnt the words studying at school.
C.She listened and memorized when others were talking.
D.She attended meetings to learnt the words from other dogs.

How could “my” mother always fool other dogs?

A.Other dogs all liked to be fooled.
B.She could explain anything in detail correctly.
C.She learnt a lot of tricks to make fool of others.
D.Other dogs were not knowledgeable enough to find out her mistakes.

What words can be used to describe “my” mother?

A.friendly and clever B.calm and confident
C.quick and experienced D.devoted and knowledgeable

Planning a visit to the UK? Here we help with ways to cut your costs.
AVOID BIG EVENTS Big sporting events, concerts and exhibitions can increase the cost of accommodation and make it harder to find a room. A standard double room at the Thistle Brighton on the final Friday of the Brighton Comedy Festival (19 Oct.) cost £169.15 at Booking.com. A week later, the same room cost £118.15.
If you can be flexible and want to know dates to avoid—or you’re looking for a big event to pass your time—check out sites such as Whatsonwhen.com, which allow you to search for events in the UK by city, date and category.
STAYAWAY FROM THE STATION If traveling to your destination by train, you may want to find a good base close to the station, but you could end up paying more for the sake of convenience at the start of your holiday.
Don’t be too choosy about the part of town you stay in. Booking two months in advance, the cheapest room at Travelodge’s Central Euston hotel in London for Saturday 22 September was £95.95. A room just a tube journey away at its Covent Garden hotel was £75.75. And at Farringdon, a double room cost just £62.95.
LOOK AFTER YOURSELF Really central hotels in cities such as London, Edinburgh and Cardiff can cost a fortune, especially at weekends and during big events. As an alternative consider checking into a self-catering flat with its own kitchen. Often these flats are hidden away on the top floors of city centre buildings. A great example is the historic O’Neill Flat on Edinburgh’s Royal Mile, available for £420 for five days in late September, with room for four adults.
GET ON A BIKE London’s ‘Boris bikes’ have attracted the most attention, but other cities also have similar programmes that let you rent a bicycle and explore at your own pace, saving you on public transport or car parking costs.
Among the smaller cities with their own programmes are Newcastle (casual members pay around £1.50 for two hours) and Cardiff (free for up to 30 minutes, or £5 per day). (358 words)
The Brighton Comedy Festival is mentioned mainly to show big events may __________.

A.help travelers pass time
B.attract lots of travelers to the UK
C.allow travelers to make flexible plans
D.cause travelers to pay more for accommodation

“Farringdon” in Paragraph 5 is most probably __________.

A.a hotel away from the train station
B.the tube line to Covent Garden
C.an ideal holiday destination
D.the name of a travel agency

Cardiff’s program allows a free bike for a maximum period of __________.

A.half an hour B.one hour C.one hour and a half D.two hours

The main purpose of the passage is __________.

A.to tell visitors how to book in advance
B.to supply visitors with hotel information
C.to show visitors the importance of self-help
D.to offer visitors some money-saving tips

Dear All,
Happy New Year! A list of important dates for this term is attached to this letter.
Interviews for our April and September Primary One classes will take place on Tuesday and Wednesday,18th&19th January.Now is the time to apply for admission to Peak School.
Children are expected to wear their uniforms this term.As is usual at this time of the year,mornings at the school are quite cold and l would suggest children wear their sweaters to school.As the temperature goes up during the day,children tend to take off their outer clothes,so it is important that all sweatshirts are labeled(贴有标签).
I have received a few requests from parents asking if their children can wear summer uniforms this term.I am of the view that all children in the school should follow the school policy and be dressed in the appropriate uniforms.In the longer term,a number of US at school have questioned the need to have a winter and summer uniform.Perhaps.with careful consideration,we can develop a uniform that will serve children for the whole academic year.
As the foggy(多雾)mornings start to appear,a number of parents have raised concerns over the safety of those children who walk to school. Our dark green uniforms are not particularly visible to motorists.Hopefully, the “Uniform Committee” to be set up this term will deal with this particular issue.I will keep parents informed of the channels through which views may be expressed in future newsletters.
We still have a “No Hat,No Play” rule on the playground,so children need to ensure that they have their sunhats in school at all times.
Yours sincerely,
P D Tunesi
Principal
The letter was most probably written

A.when the school year ended
B.before the new term started
C.after kids were admitted to school
D.after kids were interviewed

This letter was mainly written to

A.teachers B.visitors C.students D.parents

What do we know about the present school uniforms?

A.The school has solved the problems.
B.They are invisible to motorists on foggy days.
C.The school is considering changing them.
D.There is a winter and summer school uniform.

We can infer from the text that

A.the school has strict rules on uniforms
B.kids can’t have classes without wearing hats
C.parents are satisfied with the uniforms
D.most kids walk to school on foggy mornings

Robert Frost was at heart a mean-spirited human being, not the kind of man one would expect to write poetry. He was born in San Francisco. Frost entered Dartmouth University in 1893, but dropped out, and switched to Harvard, which he attended for two years. He started a brief teaching career, where he was inspired to become a poet by some of his students’ work. Frost stopped teaching and became a farmer. During this time he wrote numerous poems, and a couple of short stories. While he was a farmer he started to think seriously about becoming a famous poet.
In almost all of his poems, Frost wrote in the first person. The first widely-read poem that he published was called My Butterfly. At first his audience was very small, but with his Collected Poems he became famous. Robert Frost received almost all the awards that there were for poetry. His poetry describes the forces of nature, and the violence and deep emotional(情感的) needs of human beings, which reflect the experiences of his childhood.
Robert Frost will always be known as one of the best poets in history. His way of putting emotion and violence into words is remarkable(非同寻常的). His talent for poetry is natural-born and he had discovered this when he started to farm. Even though he treated his wife and children terribly, he still became one of the best-known poets of his and our day.
We can learn from the passage that ________.

A.Robert Frost had been a famous writer before he started teaching
B.Robert Frost wrote his poems mostly in the first person
C.Robert Frost was very famous at the beginning of his writing career
D.Robert Frost began to write poems when he was a teacher

According to the passage, Robert Frost was famous for ________.

A.his teaching career
B.his life experiences
C.showing strong feeling in his poems
D.his interest in poems

The last paragraph of the passage mainly tells us ________.

A.why Robert Frost stopped farming
B.why Robert Frost was so famous
C.about his masterpieces(杰作)
D.about the way he treated his wife and children

From the passage we know that ________.

A.Robert Frost’s most famous poem is My Butterfly
B.Robert Frost began to write when he was in college
C.Robert Frost gave up studying at Dartmouth University
D.his poetry showed the violence of war and his childhood

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