干磁粉法时，分析磁痕之前应在关闭电流的情况下吹去多余的磁粉而_爱下问搜题

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问题判断题

干磁粉法时，分析磁痕之前应在关闭电流的情况下吹去多余的磁粉而不干扰真正的磁痕

答案

参考答案：错

口语交际，情景问答题

下列句子中各有一处标点使用不当，请改正过来。（2分）

①书籍好比食品，有的只需浅尝，即浅尝辄止；有的可以吞咽，即囫囵吞枣。只有少数需仔细咀嚼，慢慢品味。

②这令我想到一则名言，“所谓的‘大人物’，使每个人觉得自己渺小；真正的大人物，使每个人都觉得自己伟大。”（埃文·埃萨尔）

完形填空

Most young people 21 some form of 22 activity. It may be walking, cycling,or swimming, or in winter, skating, or skiing. It may be a game of some kind—football, hockey, golf or tennis. It may be mountaineering. (登山运动) Those who have a 23 for climbing high and difficult mountains are often 24 with astonishment. Why are men and women willing to 25 cold and hardship, and to take 26 on high mountains? This astonishment is caused, probably, by the 27 between mountaineering and other forms of activity 28 which men 29 their leisure (空闲的) time. Mountaineering is a sport and not a game. There are no manmade rules, 30 there are for such games as golf and football. There are, 31 rules of a different kind which would be dangerous to ignore, but it is this freedom from manmade rules 32 makes mountaineering 33 to many people. Those who climb mountains are 34 to use their own methods. If we compare mountaineering and other more familiar sports we might think that one big difference is that mountaineering is not a “team game” .We should be mistaken in this. There are , it is true, no “matches” between “teams” of climbers but when climbers are on a rock face 35 by a rope 36 which their lives may depend, there is obviously teamwork. The mountain climber knows that he may have to fight forces that are stronger and more powerful than man. He has to fight the forces of nature. His sport requires high mental and physical 37. A mountain climber continues to improve in skill year after year. A skier is probably past his best by the age of thirty, and most international tennis 38 are in their early twenties. 39 it is not unusual for men of fifty or sixty to climb the highest mountains in the Alps. They may take more time than younger men, but they probably climb with more skills and less waste of effort, and they certainly 40 equal enjoyment.

A．looked down

C．looked upon

D．looked round

D．relationship