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.
Most Popular. 1  The cordless drill/driver is by far the most popular portable power tool of all time, and it's not going to lose that title anytime soon. However, cordless drills are beginning to lose ground to a relatively new type of cordless tool, the impact driver.