Английский язык. Арланова Т.Л - 34 стр.

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34
These statements are principles. They describe things in science and
engineering which are always true. The action is always followed by the same
result.
Principles have this form:
If / When (action - present tense), (result - present tense).
Link each action in column A with a result from column B to describe an
important engineering principle.
A Action B Result
1 a liquid is heated
2 a gas is cooled
3 a gas expands
4 a gas is compressed
5 a force is applied to a body
6 a current passes through a
wire
7 a wire cuts a magnetic field
8 pressure is applied to the
surface of an enclosed fluid
9 a force is applied to a
spring fixed at one end
a) it heats up
b) there is an equal and opposite
reaction
c) it changes to a gas
d) it extends in proportion to the force
e) it is transmitted equally throughout
the fluid
f) a current is induced in the wire
g) it cools down
h) it sets up a magnetic field around
the wire
i) it changes to a liquid
Exercise 4. Word study Verbs and related nouns
Each of the verbs in column A has a related noun ending in -rr or -or in
column B. Complete the blanks. You have studied these words in this and
earlier units. Use a dictionary to check any spellings which you are not certain
about.
A Verbs B Nouns
For example:
refrigerate refrigerator
1 condence __________
2 _________ evaporator
3 compress __________
4 resist __________
5 _________ charger

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