There are two ways to tell if the timing belt has been replaced. One is obvious-you are looking at a service receipt showing the replacement.
Swimlane diagrams are used whenever you need to show activities, tasks, or process steps which are being performed by different actors/roles. You can use swimlanes to group activities in an activity diagram or process flow by any category what you need: by role, by system, by department, etc.
In general, the greater the surface of the body that is covered with a low drag material, the greater the reduction in skin friction. Unfortunately, low drag materials usually have high tension. Thus a swimsuit made of a single material minimizing skin friction can be too tight, and hinder a swimmerâs movement.