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  1. Which one of the following statements best defines a 'level surface'?

    2. A.
    A horizontal surface every element of which is normal to plumb line
    B.
    A curved surface every element of which is perpendicular to the spheroidal shape of the earth
    C.
    A plane surface which is perpendicular at all points to the direction of gravity
    D.
    A curved surface which is perpendicular to the direction of gravity at every point

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    Workspace

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    Answer : Option D

    Explanation :

    No answer description available for this question. Let us discuss.

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