hõivatud ülemuse väärtuslik aeg - the valuable time of the busy boss 22 plakat kapi küljel - a poster at the side of the file cabinet mitmesugused nõuanded - miscellaneous advice vaata, et sul oleks tagavara pliiats - make sure you have a spare pen teha märkmeid ja parandusi - to tke notes and make amendments esita kirja puututavaid küsimusi - put any questions concerning the letter väldi sagedasi poolitamisi - avoid too frequent word divisions pane juurde kõik lisad - attach all enclosures õpi sagedased nimed pähe - learn the names of the most frequent contacts by heart pane kirja ülemuse ametlikud kohtumised - mark down all you'r boss's engagements arved, mida tuleb maksta - accounts to be paid pööra tähelepanu isiklikule välimusele - pay attention to your personal appearance küllaltki lai äär - a margin wide enough kontrolli õigekirja - (to) check spelling hoidu vigadest ja kohmakatest parandustest - avoiderrors and clumsy corrections
Structural evolution achieved by Roman engineers is manifest in aqueducts, dam construction, and highway bridges that relied on the development of concrete, and a growing awareness of its strength. The Romans mixed a cement, pozzolana, found near the Italian town of Pozzuoli (ancient Puteoli), with lime, sand, and water to form a mortar that did not disintegrate when exposed to water. It was used as a binder in piers and arch spandrels, and mass-formed in foundations. Coffer dams (temporary enclosures built in river beds to keep the water out while the foundations were established) were made by driving timber piles into the river bed, removing water from the area enclosed, and then excavating the soft ground inside. Despite the use of coffer dams, Roman bridge foundations typically were not deep enough to provide sufficient protection against scour. Most of the Roman bridges that survive are those built on solid rock such as the Pont du Gard aqueduct (c
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