[□] □
[□=□] □
[□ | □] □
The last test will also be cumulative , covering all material learned during the semester , and will be held on the last day of class . Given the variability in birth cohort size , life expectancy , changes in the economy , and Social Security 's evolving nature , fairness will always be a relative measure . The first atom or GROUP of the first CONTACT command in a query will always be in the asymmetric unit molecule ( s ) . If we buy or sell a business , databases containing personally identifiable information will likely be transferred as part of the sale . Programmatically , this testing prototype will soon be followed by an advanced and improved breadboard / engineering model ; then , a qualification model will be built , thus leading to the final design and manufacturing of a flight model .