Match:
1.high star a.stop pump
2.low start b.discharge liquid
3.high alarm c. alarm signal if something goes wrong
Sewage Part 5
sample cock – клапан для взятия пробы ила
sludge test – тест на ил
special triangular flask – специальная треугольная колба
give time to settle – дать время, чтобы отстояться
look at the notches – посмотреть на риски
mens few bacteria – значит, что бактерий мало
add more – добавить больше
little sludge – мало ила
rarely – редко
Put words in gaps:
sample cock – клапан для взятия пробы ила
sludge test – тест на ил
special triangular flask – специальная треугольная колба
give time to settle – дать время, чтобы отстояться
1. We make the …………………to know how many bacteria are in the system.
2. We use the …………………..to make a sludge test.
3. ………………… – the valve for taking samples.
4. ………sludge………………..
look at the notches – посмотреть на риски
means few bacteria – значит, что бактерий мало
add more – добавить больше
little sludge – мало ила
rarely – редко
5. Continue to ………………..water when necessary.
6. They ……………do everything by themselves.
7. To know the result on the flask.
8. ………………….means a lot of bacteria.
9. A lot of sludge…………………….
Read the text and do exercises:
sample cock – the valve for taking samples.
Sludge test is made in the special triangular flask. Give time to settle. Look at the notches on the flask.
A lot of sludge means few bacteria, add more bacteria.
Little sludge means a lot of bacteria, add bacteria rarely.
Choose the correct options:
sample cock – the valve for taking ……………….
a.bacteria
b.flask
c.samples
Sludge test is made in the special triangular………….
a.sample
b.flask
c.bacteria
Give time to………
a.settle
b.look