1. We... (miss) the beginning of the play because it (already start) when we arrived. 2.1... (not recognize) my old teacher because we(not see) each other for 15 years. Я

3. When I... (arrive) at her house I found she(go out).

4. My brother. (eat) all the cake before we (get) home.

5. (understand) the film because I (read) the book before.

6. Before she (buy) the flat she (look around) it several times.

7.1. (not have) my book because I had (lose) it the day before. 8.1. (study) English for two years before I (move) to N.Y.

9. She (never see) a bear before she (move) to Alaska.

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Galina303

Английский язык

4,8(61 оценок)

A ship power plant is a set of mechanisms of devices designed to ensure the movement of a ship, as well as to supply energy to various mechanisms of systems, devices.

The ship has a main engine. which generates mechanical energy for the marine engine. On modern civilian ships, diesel engines are almost exclusively used as main engines, i.e. internal combustion engines (ICE). as the most economical, although relatively heavy and cumbersome. Internal combustion engines use the energy of gases generated when fuel is burned in an engine or in a special gas generator. These include diesels and gas turbines. Steam engines use steam energy. which is formed in steam boilers when fuel is burned in them. These include steam engines and

steam turbines.

On submarines, less often on surface ships and civilian ships

nuclear power plants using energy are used

fission of atoms of heavy elements (uranium) to produce steam that rotates

turbine. There are combined installations, for example, diesel-gas turbine. Requirements of efficiency, compactness, reliability, quick readiness for operation are imposed on ship power plants.