填空题

Industrial safety does not just happen. Companies ________ low accident rates plan their safety programs, work hard to organize them, and continue working to keep them ________ and active. When the work is well done, a ________ of accident-free operations is established ________ time lost due to injuries is kept at a minimum. 　　Successful safety programs may ______ greatly in the emphasis placed on certain aspects of the program. Some place great emphasis on mechanical guarding. Others stress safe work practices by ______ roles or regulations. ______ others depend on an emotional appeal to the worker. But, there are certain basic ideas that must be used in every program if maximum results are to be obtained. 　　There can be no question about the value of a safety program. From a financial standpoint alone, safety ________ . The fewer the injury ________ , the better the workman’’s insurance rate. This may mean the difference between operating at ________ or at a loss.