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contain carbon monoxide.
exhaust system exhaust system /$|zɔst sstəm/
noun a system of pipes, silencers, etc.,
which carry exhaust gases from the
engine to a point where they are
released into the atmosphere
exhaust valve exhaust valve /$|zɔst vlv/ noun
a valve in a piston engine which allows
exhaust gases to leave the cylinder
89 experimental
exhibit exhibit /$|zbt/ verb to have or to
display
Composites, due to their construction,
exhibit good fatigue behaviour.

Altocumulus are (usually) white
layers or patches of cloud frequently
exhibiting a waved appearance.
exist exist /$|zst/ verb to be present under
particular circumstances or in a specified
place
Water can exist in the
atmosphere in three forms.
A fire risk
may exist following failure or leakage of
any component.
existence existence /$|zstəns/ noun the fact
or state of being
Warning systems are
provided to give an indication of a possible
failure or the existence of a dangerous
condition.
exit exit /e$zt/ noun 1. the act of going
out of a place
The exhaust valve opens
to allow for the exit of exhaust gases. 
exit velocity the velocity of exhaust
gases from a jet engine 2. a way out
exit nozzle exit nozzle /ekst nɒz(ə)l/ noun a
pipe or opening through which exhaust
gases leave a jet engine
exit point exit point /ekst pɔnt/ noun a position
on the ground above which an aircraft
leaving a control zone crosses the
boundary
expand expand /k|spnd/ verb to increase in
size, volume or quantity, to enlarge

Air expands when heated and contracts
when cooled.
expansion expansion /k|spnʃən/ noun an
increase in size, volume or quantity

There is an expansion of the gas when it
is heated.
expansion chamber expansion chamber /k|spnʃən
tʃembə/ noun a container which
allows for expansion of a fluid caused
by increase in temperature, etc.
expect expect /k|spekt/ verb to hope or to
assume that something is going to happen

the weather to be expected along
a route
We expect flight AC 309 within
ten minutes.  as might be expected as
people think would happen
‘…by 1959 there were some 40 pilots
past age 60 flying the line with the
number expected to rise to 250 within the
next few years’ [INTER PILOT]
expected expected /k|spektd/ adjective
being thought or hoped to be taking
place
the expected number of passengers
expected approach time expected approach time /k|
spektd ə|prəυtʃ tam/ the time at
which air traffic control expects an
arriving aircraft to complete its
approach for landing, following a delay.
Abbreviation EAT
expedite expedite /ekspdat/ verb to speed
up the progress of  to expedite the
evacuation to speed up the evacuation 
to expedite the disembarkation to get
the passengers off the aircraft quickly
expel expel /k|spel/ verb to force out, to
drive out
Exhaust gases are expelled
from the cylinder by the upward movement
of the piston.
The piston draws
fluid into the cylinders on the outward
stroke and expels fluid into the system
on the inward stroke.
experience experience /k|spəriəns/ noun 1.
the building up of knowledge or skill
over a period of time by an active participation
in events or activities
a pilot
with 20 years’ experience 2. an event or
incident
The first solo is an experience
most pilots never forget.  verb to
undergo, participate in or find oneself in
a particular situation
It is not unusual
to experience traffic delays on the
ground prior to departure.
Turbulence
can be experienced when flying through
a trough.
experiment experiment noun /k|spermənt/ a
scientific test, carried out under controlled
conditions, that is made to demonstrate
or discover something
Experiments
have shown that left-handed
people often have better hand/eye coordination
than right handed people.  to
conduct an experiment to perform an
experiment  verb /k|sperment/  to
experiment (with) to carry out a scientific
test under controlled conditions in
order to demonstrate or discover something
experimental experimental /k|sper|ment(ə)l/
　
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