SCAFFOLDING_HAS_TO_BE_DONE,_IF_THE_HEIGHT_OF_STRUCTURE_IS_ABOVE_______

1.	SCAFFOLDING_HAS_TO_BE_DONE,_IF_THE_HEIGHT_OF_STRUCTURE_IS_ABOVE__________?$
A.	1.2
B.	1.4
C.	1.5
D.	1.8
Answer» D. 1.8

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