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IV. Match these definitions with the words.
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| 1. survey work which is specially important in really difficult country | a. running |
| 2. maps which show planimetry and drainage of the area | b. track measuring |
| 3. a car which is used for providing the safe running of trains | c. topographical |
| 4. repair which involves single replacement of fastenings, local track broaching, doing away with track settlement, single rail relaying, track lining, water discharging, cleaning the track from snow, forcing the choked culverts. | d. preliminary |
V. Decide if the sentences are true (T) or false (F).
- Surveying involves geological investigations.
- Various operations and activities involved in the survey can be done by an uneducated person.
- Hydrological investigations are of great importance in the survey.
- Surveying in the broken country is not difficult.
- The preliminary work involves cleaning the right-of-way by cutting trees and rooting out stumps.
KEYS to test 1 for self control
I. 1 – j, 2 – d, 3 – g, 4 – e, 5 – b, 6 – c, 7 – h, 8 – f, 9 – a, 10 – i.
II. 1 – c, 2 – a, 3 – b, 4 – e, 5 – d.
III. A – a, B – c, C – b.
IV. 1 – c, 2 – a, 3 – b, 4 – d.
V. 1 – false, 2 – true, 3 – true, 4 – false, 5 – true.
KEYS to test 2 for self control
I. 1–d, 2–k, 3–l, 4–a, 5–j, 6–b, 7–c, 8–m, 9–i, 10–e, 11–f, 12–n, 13–h, 14–g.
II. 1 – b, 2 – a, 3 – c.
III. 1 – d, 2 – c, 3 – e, 4 – a, 5 – b.
IV. a, c, e, g.
V. 1 – d, 2 – a, 3 – e, 4 – c, 5 – b.
VI. 3, 2, 5, 4, 1, 6.
KEYS to test 3 for self control
I. 1 – c, 2 – g, 3 – j, 4 – f, 5 – i, 6 – d, 7 – b, 8 – a, 9 – h, 10 – e.
II. 1 – d, 2 – a, 3 – b, 4 – e, 5 – c.
III. A – a, B – b, C – c.
IV. 1 – c, 2 – b, 3 – a, 4 – e, 5 – d.
V. 1 – false, 2 – true, 3 – false, 4 – true, 5 – true.
KEYS to test 4 for self control
I. 1 – c, 2 – f, 3 – a, 4 – h, 5 – g, 6 – b, 7 – e, 8 – d, 9 – j, 10 – i.
II. 1 – c, 2 – a, 3 – e, 4 – b, 5 – d.
III. a), c), e), f).
IV. 1 – c, 2 – d, 3 – a, 4 – b.
V. 1 – false, 2 – true, 3 – false, 4 – true, 5 – true.
KEYS to test 5 for self control
I. 1 – f, 2 – c, 3 – b, 4 – e, 5 – d, 6 – a, 7 – j, 8 – i, 9 – h, 10 – g.
II. 1 – b, 2 – d, 3 – a, 4 – e, 5 – c.
III. 1 – a, 2 – a, C – b.
IV. 1 – d, 2 – c, 3 – b, 4 – a.
V. 1 – true, 2 – false, 3 – true, 4 – false, 5 – true.
PART II
Tunnels and Bridges
Unit 6