题目内容
变压器搬运过程中，不应有严重冲击或严重震动情况，利用机械牵引时，牵引的着力点应在变压器重心以下，以防倾斜，运输倾斜角不得超过45°，防止内部结构变形。( )
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Questions 15 to 17 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. Why are divorces so common at present
变配电网络的电压不足2kV的称为低压配电。( )
TEXT B How do we get more young people to increase their consumption of iron-rich foods Many nutritionists are advocating the fortification of a number of foods. This may help, but I contend that we should also intensify our efforts in nutrition education among our young people. I simply do not buy the argument that it is futile to try to change eating habits. Once an intelligent person—and this includes adolescents—understands the need for a healthy diet, I think he or she will act accordingly. As for specific actions, I suggest that blood hemoglobin should be checked as a routine part of a youngster’s yearly physical checkup. It should contain at least 11 grams per 100 milliliters of blood for a girl and at least 12 grams for a boy. If it is any lower, the physician probably will prescribe an easily absorbed iron supplement. Adolescents—and everyone else—should cut out highly processed foods and drinks, which may be low in iron and other nutrients. Read the labels for iron content. Especially make sure that all bakery products are made with enriched flour or whole grains. Try adding liver, chicken, beef, veal or any other variety to the weekly menu. Finally, even when you are trying to lose weight, always eat a sensible, well-balanced diet made up of a variety of fresh or very lightly processed foods. In this way, you stand a good chance of getting not only enough iron, but also adequate amounts of all the other essential nutrients. What kind of bakery products do young people have to eat
油浸变压器的结构特征是器身结构有油箱和铁芯，油箱上有散热器等零部件，油浸变压器的铁芯和绕组都浸在绝缘油中。冷却方式有油浸自冷式和强迫循环水冷式等。( )
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