1.   A race is comprised of two heats and the winner is determined by the lowest cumulative time, which is measured in the thousandths of a second.

2.   In all, five American astronauts are to visit Mir for a cumulative time in space of approximately two years.

3.   Nationally, the average cumulative time spent on welfare is about six years.

4.   It also would exclude donors who have had a cumulative time of travel or residence of five years or more in any other European country.

5.   It also would bar donors who have had a cumulative time of travel or residence of five years or more in any other European country.

6.   Previous races have been decided on cumulative time scores.

7.   The plan also would exclude donors who have had a cumulative time of travel or residence of five years or more in any other European country.