Concrete Level 1 test 1

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366095
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60
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In order to minimize segragation, concrete must not be dropped more than ____ feet

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60
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60
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60
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0
60
none
366101
0
60
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366102
0
60
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366103
0
60
none
366104
0
60
none
366105
0
60
none
366057
0
60
none
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60
none
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60
none
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60
none