【Daily Topic】【Civil Engineering Version 20160504】
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Participation reward: 2 Wealth. Reward for the correct answer: 9 wealth points. For a certain group of concrete test blocks, the compressive strength results for the three blocks are as follows: 21 N/mm2, 23 N/mm2, and 28 N/mm2. Then, the representative value of the concrete strength for this group is ( ). A、21N/㎜2 B、23N/㎜2 C、24N/㎜2 D、None of the above
For a group of concrete test blocks, the compressive strength results for three of them are as follows: 21 N/mm2, 23 N/mm2, and 28 N/mm2. Then, the representative value of the concrete strength for this group is (c). A、21N/㎜2 B、23N/㎜2 C、24N/㎜2 D、None of the above