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  1. Reinforced concrete door and window frames can be compacted using :
    1. needle vibrator
    2. plate vibrator
    3. form vibrator
    4. tapping
    The correct sequence of these equipment in order of preference (from the best to the worst) is

    2. A.
    2, 3, 4, 1
    B.
    3, 2, 1, 4
    C.
    2, 3, 1, 4
    D.
    3, 2, 4, 1

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    Answer : Option D

    Explanation :

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

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