What is the mechanical strength of the end bells used? a) 1120 MN per m2 b) 1130 MN per m2 c) 1150 MN per m2 d) 1140 MN per m2
What is the mechanical strength of the end bells used? a) 1120 MN per m2 b) 1130 MN per m2 c) 1150 MN per m2 d) 1140 MN per m2
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c) 1150 MN per m2
c) 1150 MN per m2