Elevators are commonly installed in building during_______ .
A: decoration
B: construction
C: transprtation
D: operation
A: decoration
B: construction
C: transprtation
D: operation
举一反三
- Elevators are usually installed in a room during construction.
- Being the tallest building at the time when it was built, the construction of the Empire State Building was finished during the boom years.
- During the construction of high buildings, cranes (起重机) are used to ________ building materials to the upper floors.
- During the construction of skyscrapers, cranes are used to lift building materials to the upper class. A: toss B: tow C: hoist D: hurl
- During the construction of high buildings, cranes (起重机) are used to ________ building materials to the upper floors. A: toss B: increase C: hoist D: enhance