Major types of positive-displacement pumps include: 1  Roots. 2  Lysholm twin-screw. 3  Sliding vane. 4  Scroll-type supercharger, also known as the G-Lader.
I believe that the first Reich refers to the establishment of the Holy Roman Empire in the 9th century was Charles the Great. The Second Reich was the unification of Germany under the Prussian Kaiser Wilhelm II in 1870. Of course, we all know what the Third Reich was. The First Reich was the Holy Roman Empire. There is little agreement as to when it was founded. Most German historians date the foundation from the coronation of Otto I in 962. That 'empire' had a continuous existence till 1806. The Second Reich was created by Bismarck in 1871 and lasted till 1918.
They were informally known as West Germany and East Germany. East Germany selected East Berlin as its capital, while West Germany chose Bonn as a provisional capital, to emphasise its stance that the two-state solution was an artificial and temporary status quo.fter World War I and the German Revolution of 1918â1919, the Empire was replaced by the parliamentary Weimar Republic. The establishment of Nazi Germany in 1933 led to World War II and the Holocaust. After 1945, Germany evolved into two states, East Germany and West Germany. In 1990, the country was reunified.