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stroke cycle and five-stroke cycle ones. 4. In accordance with the valve loca-
tion, the internal combustion engines are called I-head engines if valves are
in head (overhead valve), and L-head engines if valves are in block (flat head).
5. Radial engines are often called flat engines.
KEY VOCABULARY DEVELOPMENT
Exercise 12. Match the words in column A with the words in column B to form
meaningful phrases and then identify them at the sentence level in the text. It
will help you understand the text in detail.
A
B
1) mechanical
a) designs
2) fossil
b)
power
3) profound
c) result
4) significant
d) impact
5) in-cylinder
e)
space
6) combustion
f) chamber
7) expanding
g) gases
8) efficient
h) compression
9)
early
i) fuel
10) confined
j) distinction
Exercise 13. Decide which of the verbs on the left collocate with the nouns on the
right and then identify the word combinations at the sentence level in the text.
It will help you understand the text precisely.
1) to run on
a) coal gas
2) to deliver
b) cylinders
3)
to push
c) air (fuel) mixture
4) to inject
d) power
5) to slide against
e) process
6)
to identify
f) surface
7) to facilitate
g) engines
8) to mix
h)
air and fuel
9) to position
i) piston
10) to produce
j) motion
Достарыңызбен бөлісу: 
