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问题 多项选择题

完成的工作成果在项目建设周期的不同阶段主要工作成果具有不同的表现形式有()。

A.在项目策划和决策阶段，项目建议书、可行性报告是咨询工程师提供咨询服务的工作成果

B.项目准备阶段产生的工作成果

C.在项目实施阶段，承包商建造完成的土建工程、电气工程、给水排水工程以及已安装的生产设备等是阶段性的工作成果

D.项目竣工验收和总结评价阶段的工作成果

E.项目竣工后物业评价阶段工作成果

答案

参考答案：A, B, C, D

填空题

You might think that hamburgers were invented in the United States, but that is not totally true. These (1) , or patties, actually came from Germany in the middle of the nineteenth century. They were brought to the United States by (2) who came from the city of Hamburg. That is why (3) was "hamburger steak".

However, people in other places (4) that they invented the hamburger. Perhaps we’ll never have a (5) . But there’s no question that the hamburger was a (6) . Why Perhaps because at that time, industry was growing and a kind of (7) food was needed for workers.

The hamburger became even more popular (8) when the first chain of fast food restaurants was started. This chain was called "White Castle". It served tiny hamburgers that were sold for only (9) . Then, in the 1930s there came the (10) where customers were served in their cars by waiters in uniform. And the hamburger was one of the most (11) .

By now, The hamburger was ready to (12) the world. And this happened with McDonald’s, which was actually a (13) at first. But by the early 1950s the hot dog was replaced by the hamburger. McDonald’s and other fast food restaurants (14) around the world throughout the rest of the twentieth century. McDonald’s alone has (15) for everyone person in the world.

The importance of the hamburger to (16) remains significant. About (17) of all sandwiches that are eaten are hamburgers. According to some sources, (18) of current workers in the United States had their first job at McDonald’s. But the face of the hamburger is changing (19) . Nowadays it is possible to buy a chicken burger, a turkey burger, (20) , or veggie burger.

2（）
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问答题 简答题

在冰晶石-氧化铝熔盐生产过程中，常用的添加剂有哪些？
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