题目内容
对某项工程的施工，业主通过公开招标的方式选定了承包人，双方签订了施工合同。合同中约定，为了确保工程质量，要求承包人向业主支付20万元定金。施工合同履行时，在路基开挖施工中碰到地下有大量文物，使工程施工进度网络计划中某关键工作停工10天。另外，在路面工程施工时，由于施工机械出现故障，使进度计划中关键线路上的部分工作停工15天。两次停工承包人均按合同条款规定提出了工程延期和费用索赔要求。问题：（1）试简要说明定金与预付款有何区别（2）监理工程师判定费用索赔成立的条件是什么（3）承包人提出的工程延期和费用索赔理由是否成立？为什么
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While the polltakers are most widely known for their political surveys, the greatest part of their work is on behalf of American business. There are three kinds of commercial surveys. One is a public relations research, such as that done for banks, which finds out how the public feels about a company. Another is employee-attitude research, which learns from rank-and-file workers how they really feel about their jobs and their bosses, and which can avert strikes by getting to the bottom of grievances quickly. The third, and probably most spectacular, is marketing research, testing public receptivity to products and designs. The investment a company must make for a new product is enormous--$ 5,000,000 to $ 10,000,000, for instance, for just one new product. Through the surveys a company can discover in advance what objections the public has to competing products, and whether it really wants a new one. These surveys are actually a new set of signals permitting better communication between business and the general public--letting them talk to each other. Such communication is vital in a complex society like our own. Without it, we would have not only tremendous waste but the industrial anarchy of countless new unwanted products appearing and disappearing. The title below that best expresses the main idea of this passage is ______.
During the United States Civil war, many people in the south were forced to (flee) their home.
妊娠合并重度贫血的实验室检查诊断依据哪项是错误的：
"The highest merit we ascribe to Moses, Plato, and Milton," says Emerson, "is that they set at nought books and traditions, and spoke not what men thought but what they thought. A man should learn to detect and watch that gleam of light which flashes across his mind from within, more than the luster of the firmament of bards and sages. Yet he dismisses without notice his thought because it is his. In every work of genius we recognize our own rejected thoughts; they come back to us with a certain alienated majesty." It is strange that any one who has recognized the individuality of all works of lasting influence should not also recognize the fact that his own individuality ought to be steadfastly preserved. As Emerson says in continuation, "Great works of art have no more affecting lesson for us than this. They teach us to abide by our spontaneous impressions with goodhumored inflexibility, then most when the whole cry of voices is on the other side. Else tomorrow a stranger will say with masterful good sense precisely what we have thought and felt all the time, and we shall be forced to take with shame our opinion from another." Accepting the opinions of another and the tastes of another is very different from agreement in opinion and taste. Originality is independence, not rebellion. It is sincerity, not antagonism. Whatever you believe to be true and false, that proclaim to be true and false. Whatever you think admirable and beautiful, that should be your model, even if all your friends and all the critics storm at you as a crotchet-monger and an eccentric. Whether the public will feel its truth and beauty at once, or after long years, or never cease to regard it as paradox and ugliness, no man can foresee. Enough for you to know that you have done your best, have been true to yourself, and that the utmost power inherent in your work has been displayed. The author’s advice to writers may be summed up as ______.
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