Example: The compulsive idea of contamination may lead its victim to wash and rewash his hands at every contact with matter, until finally, though they are raw and sore, he is incapable of resisting the act. [Please select]
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If the sample will not pass the tests, which is often the case, the charge must be rewashed for one hour, or some other time, according to the judgment of the chemist in charge. [Please select]
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