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冷自粘橡胶改性沥青类防水卷材的自粘结施工，卷材的铺贴应在基层处理剂(冷底子油)涂层表干后实干前及时铺贴，以防在彻底干燥的情况下铺贴影响粘结效果。( )
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反应型防水涂料中的高分子材料在施工固化前是以预聚体形式存在的，不含溶剂和水。双(或多)组分涂料通过固化剂、单组分涂料通过湿气和水起化学反应而形成弹性防水涂膜。( )
Ever since it was built, the Empire State Building has captured the attention of young and old alike: every year, millions of tourists flock to the Empire State Building to get a glimpse from its 86th and 102nd floor observatories; the image of the Empire State Building has appeared in hundreds of ads and movies, not to mention the countless toys, models, postcards, ashtrays, thimbles, etc. that bear the image. Yet, why does the Empire State Building appeal to so many When the Empire State Building opened on May 1, 1931, it was the tallest building in the world -- standing at 1,250 feet tall. This building not only became an icon of New York City, it became a symbol of twentieth century man’s attempts to achieve the impossible. When the Eiffel Tower (984 feet) was built in 1889 in Paris it, in a way, taunted American architects to build something taller. By the early twentieth century, a skyscraper race was on. By 1909 the Metropolitan Life Tower rose 700 feet (50 stories), quickly followed by the Woolworth Building in 1913 at 792 feet (57 stories), and soon surpassed by the Bank of Manhattan Building in 1929 at 927 feet (71 stories). When John Jacob Raskob (previously a vice president of General Motors) decided to join in the skyscraper race, Walter Chrysler (founder of the Chrysler Corporation) was constructing a monumental building, the height of which he was keeping secret until the building’s completion. Not knowing exactly what height he had to beat, Raskob started construction on his own building. In 1929, Raskob and his partners bought a parcel of property at 34th Street and Fifth Avenue for their new skyscraper. Raskob was able to purchase the site for approximately ＄16 million. After deciding on and obtaining a site for the skyscraper, Raskob needed a plan. Raskob hired Shreve, Lamb & Harmon to be the architects for his new building. The logic of the plan is very simple. A certain amount of space in the center, arranged as compactly as possible, contains the vertical circulation, mail chutes, toilets, shafts and corridors. Surrounding this is a perimeter of office space 28 feet deep. The race was getting very competitive. With the thought of wanting to make the Empire State Building higher, Raskob himself came up with the solution. After examining a scale model of the proposed building, Raskob said, "It needs a hat!" Looking toward the future, Raskob decided that the "hat" would be used as a docking station for dirigibles. The new design for the Empire State Building, including the dirigible mooring mast, would make the building 1,250 tall (the Chrysler Building was completed at 1,046 feet with 77 stories). Which of the following statements is NOT true, according to the passage
SECTION A CONVERSATIONS In this section you will hear several conversations. Listen carefully and then answer the questions that follow. Questions 1 to 3 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation. Which of the following is the advice Martin gives her
Questions 17 to 20 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. When was Hamburger really regarded as typical of America
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