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Q. |
In transportation of concrete by pumps |
A. | the slump should not be less than 50 mm and more than 80 mm |
B. | the water cement ratio should remain between 0.5 to 0.65 |
C. | the number of bends in a pipe line should be as small as possible |
D. | all of the above |
Answer» D. all of the above |
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