This is the first level to require a visual system.

They do however require an electrical system to be present in the area of operation.

This requires a good system of consultation from field to table and, therefore, higher costs too, but it can in fact be done.

The data handling between processors required just a few system calls.

A lasting solution to the pay problems, he said, will require a completely new system.

The fuel system as explained above is one of the two systems required for starting the engine.

Doctors needed autonomy; he required a system to be flexible to the needs of his patients.

European aviation authorities have made plans to require a similar system in the next few years.

But he said the new assessment of the Iranian threat required a different system using existing technology.

But the test requires a healthy immune system to be accurate.