[填空题]Have you ever been asked to take a polygraph test for a job A polygraph, also called a lie detector, is a device that is used to find out if someone is telling a lie. It is based on the belief that lying causes certain physical reactions. These reactions, which include a change in blood pressure and pulse rate, are measured by the polygraph.
Lie detector tests are often used in court and in the workplace. However, a law that went effect in December 1988 limits the ways that employers can use these tests. Employers can no longer use them to screen(审查) people who are applying for jobs. The only exception is for those who want government jobs as security guards or drug handlers. Also, managers can no longer ask workers to take such tests unless there is reasonable suspicion that the worker has stolen or damaged property. This will curb tests for suspected offenses, such as drug use or sexual harassment, and for workers who were merely in the area of a theft. Bosses who request lie

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