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[背景材料] 某建筑工程，地下1层，地上16层。总建筑面积28000m2，首层建筑面积2400m2，建筑红线内占地面积6000m2。该工程位于闹市中心，现场场地狭小。 施工单位为了降低成本，现场只设置了一条3m宽的施工道路兼作消防通道。现场平面呈长方形，在其斜对角布置了两个消火栓，两者之间相距86m，其中一个距拟建建筑3m，另一个距拟建建筑43m。 为了迎接上级单位的检查，施工单位临时在工地大门入口处的围墙上临时悬挂“五牌”、“二图”，检查小组离开后，项目经理立即派人将之拆下运至工地仓库保管，以备再查时用。 [问题]1.该工程设置的消防通道是否合理请说明理由。
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In these years, economic, social and technological factors have influenced the kitchens’ design. 61) Since it is often used simultaneously by both family members as well as guests, the kitchen requires not only a glamorous look but a practical one. Also, the design elements must meet the needs of modem family.Environmental concerns have had an enormous impact on the design of kitchens. 62) This concern includes recycling of household materials, as well as energy efficient appliances and the purity of both water and air. Research shows that up to 85 percent of the population is concerned about what comes out of their tap. This is why it’s important to consider adding a water filter system.63) The character of today’s kitchen is very different from the way it was thirty years ago. There’s more sophistication in food preparation, and more technological help with cooking and cleaning up. When choosing cabinets, first consider the style. Use the architectural style of your house as guide. Because cabinets are a big investment, it is best to choose quality. Popular styles in kitchen cabinets are framed panel doors with raised or recessed panels of wood, cabinet fronts with glass panes, or simple slab doors in a rich painted or laminated finish. Cabinet pulls, handles and knobs are offered in a myriad of designs and finishes. Treat hardware as jewelry and don’t be afraid to mix and match styles.64) Because many of today’s kitchens consist of two or more cooks sharing in the meal preparation, there is a need for more counter space, cooktops and sinks. Life styles are changing, but the primary function of the kitchen as an area for preparing food has remained unchanged. The sink remains one of the most used areas in the kitchen as well as an important decorative statement.Appliance technology is moving very fast. Choosing what type of appliances as well as how many will depend on several factors such as how often and how much you cook and the size of your kitchen.Don’t limit yourself to one of each kind of appliance. 65) You can have a refrigerator in one place and a freezer in a separate area or two sets of cooktops: one on the counter next to the wall oven and one on an island. You can even have two dishwashers if size and budget require and permit -- think of it as saving time in the long run. Since it is often used simultaneously by both family members as well as guests, the kitchen requires not only a glamorous look but a practical one.
One of the most famous bridges in the world is the Golden Gate Bridge that spans San Francisco Bay. Because it was built in 1937, it has become one of the first sights people see if they are coming to San Francisco by ship. The main part of the Golden Gate Bridge is a suspension span. It hangs from steel cables that are supported by two huge towers, one at each end of the bridge. The suspension span was the longest in the world when it was finished in 1937. It measures 4,200 feet between the towers. The floor of thebridge is wide enough for six lanes of cars, three in each direction. There are sidewalks, too, but not many people use them. It costs a lot of time to go on foot from one end of the bridge to the other.The years since 1950 have been called the era of the giant bridge. Most of them have been built in the United States. The Mackinac Bridge in upper Michigan was finished in 1958. It is a suspension bridge, with foundations resting on rock 200 feet below the surface of the water. With a span of 3,800 feet, it was the second in length to the Golden Gate Bridge.In 1964 the longest and heaviest suspension bridge was completed in New York City. Known as the Verrazano--Narrows Bridge, it carries traffic between Staten Island and Brooklyn, parts of the city of New York. Before it was built, commuters to the city had to travel by ferry. Now millions of cars pass over the bridge every year. When a lower deck is added, 48 million cars will be able to cross the bridge in a single year. How long is the main span of the Golden Gate Bridge
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