Docks and Harbor Engineering
Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area?

Bulk heads, revetments and groynes
Sea walls, bulk heads and groynes
Sea walls, bulk heads and revetments
Sea walls, revetments and groynes

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Docks and Harbor Engineering
Assertion A : Basin walls have to be of much grater height than dock walls.Reason R : Tidal basins are subject to fluctuations of levels due to tidal variations.Select your answer based on the coding system given below:

A is true but R is false.
Both A and R are true but R is not correct explanation of A.
Both A and R are true and R is the correct explanation of A.
A is false but R is true.

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Docks and Harbor Engineering
Which of the following are repair docks ?

wet docks, floating docks, lift docks, marine railways
marine railways, dry docks, floating docks, wet docks
wet docks, lift docks, marine railways, dry docks
dry docks, wet docks, floating docks, lift docks

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