# SOLUTION EXAM SECTION I (20p) 13-14

Urban and Civil

Nov 25, 2013 (4 years and 5 months ago)

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SOLUTION EXAM SECTION I (20p) 13
-
14

MULTIPLE CHOICE (10 p) = PENALTY: 3 wrong answer =
-
1

a

b

c

d

a

b

c

d

a

b

c

d

a

b

c

d

1

XXX

6

XXX

11

XXX

16

XXX

2

XXX

7

XXX

12

XXX

17

XXX

3

XXX

8

XXX

13

XXX

18

XXX

4

XXX

9

XXX

14

XXX

19

XXX

5

XXX

10

XXX

15

XXX

20

XXX

a

b

c

d

a

b

c

d

a

b

c

d

a

b

c

d

1

XXX

6

XXX

11

XXX

16

XXX

2

XXX

7

XXX

12

XXX

17

XXX

3

XXX

8

XXX

13

XXX

18

XXX

4

XXX

9

XXX

14

XXX

19

XXX

5

XXX

10

XXX

15

XXX

20

XXX

CORRECT THE MISTAKES (1p)

The

iron is
very
WIDELY

used
in machine components
despite
of

CORRODING/ THE FACT THAT IT
CORRODES

corrode

MORE EASILY

easier

than other
s

metals

)

(1): REINFORCED CONCRETE: Translate
into Spanish:

(2) YET Give a synonym:

HOWEVER

(3) BY COMPARISON means in this text the same as: a) likely b
) unlikely

c) similarly d) for example :

(4) THEY: Give the referent:

(5) THE FORMER: Give the referen
t
:

A THI
N

POLYMER FRAME

(6) AS: Give a synonym

BECAUSE

(7) Stiff = give a synonym

RIGID

FILL IN THE GAPS (5p) (……. GRAMMAR; ________ WF/VOC)

The properties of steel can be changed
IN MANY WAYS
.
One of
THE MOST WIDELY USED METHODS

is
ACCORDING TO

the amount of carbon
THAT IT CONTAINS
, because
THE HIGHER

the carbon content,
THE LESS
SOFT

it is.
ON THE OTHER HAND
,

the properties of steel can also be changed by heat
TREATMENT.

This is the term
GIVEN

to a number of processes
BY WHICH

the structure o
f the metal is altered. One of these processes is ANNEALING,
WHICH CONSISTS OF HEATING

the metal above its critical temperature and then cooling it slowly.
AS A RESULT,

the
metal
BECOMES

harder and
MORE EASILY

machineable
SINCE

this process prevents inter
nal stresses
FROM
OCCURRING.

UNLIKE

annealing, in the process of
HARDENING

the metal is harder but
VERY BRITTLE
.
To avoid this problem, we can
use tempering. With this process we get a metal that is
MUCH TOUGHER

than
THAT OBTAINED

in annealing.