There are three patterns of acute sinusitis:  Persistent cold symptoms. If symptoms get better in 10 days, the infection is probably viral. âBut if thereâs no improvement after 10 days, itâs likely to be bacterial at that stage,â Dr. Rosenfeld said.
Electric Tools Employees using electric tools must be aware of several dangers. Among the most serious hazards are electrical burns and shocks. Electrical shocks, which can lead to injuries such as heart failure and burns, are among the major hazards associated with electric-powered tools.
To prevent hazards associated with the use of power tools, workers should observe the following general precautions: 1  Never carry a tool by the cord or hose. 2  Never yank the cord or the hose to disconnect it from the receptacle. 3  Keep cords and hoses away from heat, oil, and sharp edges.