问题
多项选择题
在软式传动机构中，布置线路时选用滑轮、摇臂、扇形轮的原则是：（）
A、避免钢索在传动过程中受到额外的拉伸作用
B、避免钢索的预加张力过大
C、避免钢索的预加张力过小
D、避免钢索过多转弯
答案
参考答案：A, D
搜题请搜索小程序“爱下问搜题”
在软式传动机构中，布置线路时选用滑轮、摇臂、扇形轮的原则是：（）
A、避免钢索在传动过程中受到额外的拉伸作用
B、避免钢索的预加张力过大
C、避免钢索的预加张力过小
D、避免钢索过多转弯
参考答案：A, D
任务型阅读（共5小题；每小题1分，满分5分) 请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入最恰当的单词。注意：每空只填1个单词。 What will man be like in the future? We can only make a guess, but we can be sure that he will be different from what he is today. In the modern world we use our brains a great deal. Even so, we still make use of only about 20% of the brain’s capacity. As time goes on, however, we shall have to use our brains more and more, and eventually we shall need larger ones! This is likely to bring about a physical change too the head, in particular the forehead, will grow larger. Nowadays our eyes are in constant use. In fact, we use them so much that very often they become weak and we have to wear glasses. But over a very long period it is likely that man’s eyes will grow stronger. On the other hand, we tend to make less use of our arms and legs. These, as a result, are likely to grow weaker. At the same time, however, our fingers will grow more sensitive because they are used a great deal in modern life. But what about hair? It will probably disappear from the body altogether in the course of time because it does not serve a useful purpose any longer. In the future, both sexes are likely to be bald（秃的）. Perhaps all these give the impression that future man will not be attractive creature to look at! This may well be true. All the same, future man will still have a lot in common with us. He will still be a human being, with thoughts and emotions similar to our own. Title: Man in the future
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