They may qualify for conversion to permanent status after two years of satisfactory service.

After one year of satisfactory service, they may qualify for conversion to permanent status.

After two years of satisfactory service, they may qualify for conversion to permanent status.

This rebuilding is not particularly expensive and the machines are reported to give satisfactory service.

When properly lubricated a steel wheel can give a long period of satisfactory service.

The performance of a network depends on whether all origin-destination pairs are receiving a satisfactory service.

"We try to give a satisfactory service to our customers," said the bald man.

It was a record of satisfactory service, but so far he hadn't sought out or created for himself many opportunities for excellence.

Therefore, maintaining satisfactory service quality levels is key to creating "customer stickiness."

Of course, it goes without saying that any operator will wish to run a reliable and satisfactory service if he is to attract custom.