• 2021-04-14
    Masonry units originally were stacked without using any bonding agent, but every modern masonry construction uses a cement mortar as a bonding material.
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      Which of the following is a steel structure building? (There is only one correct answer to this question) A: The building, beams and columns are reinforced concrete, the roof and walls are profiled steel plate B: The building, beams and columns are hot rolled steel, walls are masonry block C: The building, beams and columns are timber, walls are masonry block D: The building, beams and columns are bamboo, walls are masonry block

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      Mortar is a binding material that is used in making cement-mortar.

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      How many methods the authors used in Clinical bonding to zirconia ceramic part?

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      In an ionic solid, positive and negative ions are bound in the lattice by ionic bonding forces.

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      Which of the following ( ) is not helpful for the protection of scarce resources A: Material substitute B: Increment of material uses C: Selling services instead of products D: Using eco-materials