【Daily Topic】【Engineering Version 20160508】

2016-05-08View Original

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Participation reward: 2 Wealth. Reward for the correct answer: 9 wealth. Which of the following is NOT a measure to improve blasting safety in open-pit mining? ( ) 　　A. Use of multi-row hole differential blasting B. Use of multi-row hole differential squeezing blasting C. Use of cushion blasting D. Open-pit deep-hole blasting

Reply #22016-05-09

Which of the following is not a measure to improve blasting safety in open-pit mining? (D) 　　A. Use of multi-row hole differential blasting B. Use of multi-row hole differential squeezing blasting C. Use of cushion blasting D. Open-pit deep-hole blasting

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【Daily Topic】【Engineering Version 20160508】

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