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无绝缘轨道电路在分界处（）钢轨绝缘，轨道电路电流采用不同信号频率。
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催眠的目的是让人说出内心的秘密。()
Cet-6-1.10-Exercise 01O) It’s important to bear in mind that when we offer a structural interpretation of unemployment, a “loss of jobs” means an increase in productivity. Traditionally, economists have argued that productivity increases are a good thing, even though they may cause unemployment for some workers in the short run. In the long run, the economy does not run out of jobs. Rather, new jobs emerge as old jobs disappear. The story we tell is that average well-being rises, and the more people are able to adapt, the more widespread the improvement becomes.
Cet-6-1.10-Exercise 02F) When Watts looked into the history of “the greatest painting of all time”, he discovered that, for most of its life, the “Mona Lisa” remained in relative obscurity. In the 1850s, Leonardo da Vinci was considered no match for giants of Renaissance art like Titian and Raphael, whose works were worth almost ten times as much as the “Mona Lisa”. It was only in the 20th century that Leonardo’s portrait of his patron’s wife rocketed to the number-one spot. What propelled it there wasn’t a scholarly re-evaluation, but a theft.
继电器的型号表示法，采用汉字拼音字母和数字表示，字母表示继电器种类，数字表示（ ）。
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