• 2021-04-14
    During the construction of high buildings, cranes (起重机) are used to ________ building materials to the upper floors.
  • hoist

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      Building materials may be classified into three groups according to the purposes they are used for: structural materials, decoration materials and some special materials.

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      第5单元--热身(副本) Look at the following buildings and choose what kinds of building materials are used.

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      智慧职教: What ___ used as chief building materials today  __ steel and concrete.

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      The main contents of the garden are ( ) A: Mountain building, water management, plant allocation, construction B: Building mountains, water management, plant configuration C: Build mountains, manage water, build buildings D: plant configuration, manage water, build buildings

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      For the two adjacent floors, call the upper layer ______ and the lower layer______ .