Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
POSIBNUK.doc
Скачиваний:
9
Добавлен:
30.04.2019
Размер:
6.37 Mб
Скачать

III. Identify the one underlined word or phrase that must be changed in order for the sentence to be correct:

1. This systems are available to cover square fields ranging in size from

A B C D

50 to 260 acres.

2. A small gasoline engine mounted at the midpoint of the line are used

A B C

to roll the lateral to the next position.

D

3. Any of these materials may be using for underground laterals, but

A B

portable surface systems obviously are more adaptable for aluminium pipe.

C D

4. Numerous devices has been designed for adapting risers to laterals.

A B C D

5. The radial line of the centre-pivot system is rotating slowly around

A B

the pivot point in the centre of the field by hydraulic or electric motors.

C D

6. In some instances, the influence of free water on crop surfaces has enhanced the propagation of bacteria, but the later can be avoided by use of

A B C D

disease free seeds.

IV. Match the term to its definition:

1. lateral

1. The area occupied by an activity or extension over smth.

2. mains

2. The quality or state of being penetrable.

3. nozzle

3. Located to one side of the main pipeline.

4. permeability

4. A principal pipe system, duct for drainage, gas, water etc.

5. coverage

5. An easily carried or transported equipment.

6. portable system

6. A projecting aperture at the end of a tube, pipe serving as an outlet for a fluid.

UNIT 9

I. Grammar:

1. Perfect Tenses: a) Present, b) Past, c) Future.

II. Texts:

1. Principles of Subirrigation.

2. Subsurface Irrigation.

I. Grammar exercises

1.1. Translate the sentences into Ukrainian paying attention to the verbs in the Perfect tenses:

1. Irrigation in the humid eastern United States has experienced a substantial growth during the fifteen-year period 1939-1954.

2. In each region the rate of increase has been very marked.

3. From this small beginning by a handful of emigrants have developed today’s extensive irrigation activities.

4. The development of science and technology had influenced the growth of our civilization by that time more and more.

5. Einstein didn’t suppose that his discovery would have become very dangerous for the very survival of the human race.

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]