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bridge, but sometimes used in building construction. It is a large hollow structure
that is sunk down through the earth by workers excavating from inside it.
c) a small, powerful boat for towing or pushing ships, barges, etc
d) no correct variant

21.Find the meaning of the term “caisson”:
a) in engineering, a type of foundation most commonly used underwater for a
bridge, but sometimes used in building construction. It is a large hollow structure
that is sunk down through the earth by workers excavating from inside it.
b) any vertical spar for supporting sails, rigging, flags,etc., above the deck of a
vessel or any components of such a composite spar
c) a vessel, usually flat-bottomed and with or without its own power, used for
transporting freight, esp on canals
d) no correct variant

22. Find the meaning of the term “mast”:
a) any vertical spar for supporting sails, rigging, flags,etc., above the deck of a
vessel or any components of such a composite spar
b) a small, powerful boat for towing or pushing ships, barges, etc
c) a vessel, usually flat-bottomed and with or without its own power, used for
transporting freight, esp on canals
d) no correct variant

23.Find the meaning of the term “barge”:
a) a vessel, usually flat-bottomed and with or without its own power, used for
transporting freight, esp on canals
b) a long, relatively narrow, and hollow steel float with a rectangular or round
cross section
с) the act or process of drilling a borehole by means of a rotary-drill machine, such
as in drilling an oil well.
d) no correct variant

24.Find the meaning of the term “towboat”:
a) a long, relatively narrow, and hollow steel float with a rectangular or round
cross section
b) a small, powerful boat for towing or pushing ships, barges, etc.
c) machine which creates holes in the ground
d) no correct variant

25.Give the English equivalent for the term “гвинт”:
a) drill ship
b) floater
c) thruster
d) no correct variant

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