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滚涂法的特点是适用于大面积或大批量的平面涂装工程，其生产效率高，涂层均匀，节省稀释剂，能采用高黏度涂料一次涂装达到所需要的涂层厚度。( )
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TEXT HLeighton SchoolSCHOOL RULESEVERY PUPIL IN THE SCHOOLS OLD ENOUGH TO HAVE A SENSE OR RESPONSIBILITY. WE DEPEND ON YOUR GOOD MANNERS, COMMON SENSE AND CO-OPERATION.1. Pupils must bring the correct books and writing materials to each lesson.2. Other items, for example, P.E. Kit, must be brought to practical lessons.3. Eating and drinking in classrooms is forbidden. Chewing gum must not be brought to school.4. Pupils must not bring valuables to schools, e.g. radios, tape recorders or jewellery. Money should be kept in purse belts and large sums must be handed to the Office.5. The correct school uniform must be worn. Outdoors coats are not be worn in school.6. Pupils must keep to the right in the corridors and on the stairs; they must move quietly around the staff on duty.7. Pupils are not permitted to go to the Staff room during the lunch break. There is always a member of staff on duty.8. Pupils having lunch in school are not allowed to leave the school premises without a printed permission slip. Pupils in the school can ______
TEXT G Savor The Savor return is our most flexible leisure ticket. It can be used on all trains on Saturdays, Sundays and public holidays. On Mondays and Fridays it can be used on most trains except some peak trains. Conditions of travel - You must book your ticket at least seven full days before you start your journey. - You must return within thirty-one days. - Break of journey is not allowed. - There are no reductions on Savor return tickets for children under the age of sixteen. - Savor return tickets are only available for journeys over fifty miles. You must book your Savor return ticket ______ days in advance.
TEXT IMargaret Mee: English Explorer and Painter of Amazon FloraBorn in Chesham, England, in May 1909Studied at St Martins School of Art and later at the Camber well School of Art.Went to Brazil with her husband Greville, a commercial artist, in 1952.Made her first expedition to the Amazon in 1956 at the age of 47.Made 15 further expeditions to the Amazon. The last expedition took place in May 1988.She never painted or drew from photographs. She painted what she saw.She published two books of her paintings in 1968 and 1980.She achieved an ambition of 36 years to paint the night-flowing Amazon Moonflower only in 1988.her diaries, in Search of the flowers of the Amazon Forest, were published in 1988.A botanist who knew her well described her as follows: "Many people have traveled Amazonian waters, many people have painted Amazonian plants, but Margaret Mee outranks those other travelers and artists simply because she, with her watercolors, went, saw, and conquered the region. She has been able to fill her subjects with the reality of their environment. The night-flowing Amazon Moonflower was painted at the age of ______
TEXT A Petroleum products, such as gasoline, kerosene, home heating oil, residual fuel oil, and lubricating oils, come from one source - crude oil found below the earth’s surface, as well as under large bodies of water, from a few hundred feet below the surface to as deep as 25,000 feet into the earth’s interior. Sometimes crude oil is secured by drilling a hole through the earth, but more dry holes are drilled than those producing oil. Pressure at the source or pumping forces crude oil to the surface. Crude oil wells flow at varying rates, from ten to thousands of barrels per hour. Petroleum products are always measured 42-gallon barrels. Petroleum products vary greatly in physical appearance: thin, thick, transparent or opaque, but regardless, their chemical composition is made up of two elements: carbon and hydrogen, which form compounds called hydrocarbons. Other chemical elements found in union with the hydrocarbons are few and are classified as impurities. Trace elements are also found, but these are of such minute quantifies that they are disregarded. The combination of carbon and hydrogen forms many thousands of compounds which are possible because of the various positions and joinings of these two atoms in the hydrocarbon molecule. The various petroleum products are refined from the crude oil by heating and condensing the vapors. These products are the so-called light oils, such as gasoline, kerosene, and distillate oil. The residue remaining after the light oils are distilled is known as heavy or residual fuel oil and is used mostly for burning under boilers. Additional complicated terming processes rear~ range the chemical structure of the hydrocarbons to produce other products, some of which are used to upgrade and increase the octane rating of various types of gasoline. Which of the following is true
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