There are two main types of submersible pumps. A well pump is hung or suspended in a water well on a pipe, sometimes to depths past 1000â. well pumps are powered by AC (alternating current) voltage but DC (direct current) voltage is used on smaller pumps for low flows of water up to a depth of 200 feet.
Since the systems make both airlines and travel agents more pro-ductive, CRS owners charge both of them for the use of their systems. Travel agents rent the equipment, while airlines pay a booking fee for each flight reservation. American Airlines introduced the first com-puter reservation system; United, TransWorld, Eastern, and Delta each followed with systems of their own. American and United, how-ever, dominate the CRS industry; in 1986, they accounted for 41 per-cent and 33 percent, respectively, of the flight segments booked through computer reservation systems. The influence of computer reservation systems on bookings can be
E-Verify was originally established in 1997 as the Basic Pilot Program to prevent illegal immigrants from obtaining employment illegally in the United States. In August 2007, DHS secretary Michael Chertoff and Commerce secretary Carlos Gutierrez announced several steps to expand employment eligibility verification. They started by requiring all federal contractors and vendors to use E-Verify. The Internet-based program is free and maintained by the United States government.