Деловой английский язык. Енютина А.А. - 17 стр.

                                        17



                                   TEST № 10

     Прочитайте текст и письменно выполните задания к нему.

                                   Ventilation

     Ventilation of the mine is vitally important task. A sufficient amount of air
must be provided to keep the lower levels of mine well ventilated. Air quality in
mine workings must be kept at acceptable health standard. The air in mine is
regularly contaminated by smoke from blasting and exhaust from diesel pow-
ered machines.
     The mine needs a ventilation system, and usually it is induced ventilation
with high-pressure fans on surface, blowing fresh air down through the intake
shaft. There is a network of ventilation ducts in the mine. To regulate the direc-
tion of airflow for its needed distribution into the underground workings, special
devices are installed. They are ventilation doors, ventilation dam (stopping) to
control the airflow, passing through active work areas. Then an exhaust airway
channels the polluted air away from under-ground workings. It is very important
to provide enough of fresh air directly to the stope, and prevent the loss of fresh
air by shortest way between intake and exhaust airways. The duty of special
ventilation department is the control of mine atmosphere, inspection and main-
tenance of ventilation devices, isolation of ventilation ducts against air loss.

                                    Задания

    1. Переведите текст на русский язык.
    2. Ответьте на вопросы к тексту:
    a) Why is ventilation of mine so important?
    b) What is air in mine regularly contaminated by?
    c) What are the main components of mine ventilation system?
    3. Переведите на английский язык следующие предложения:
    a) Вентилятор – любое устройство или машина, создающее поток воз-
духа для проветривания.
    b) Основными загрязнителями (pollutants) рудничной атмосферы яв-
ляются дым от буровзрывных работ и выхлопные газы.