【单选题】
爆破员岗位职责要求，爆破员应___好自己所领取的民用爆炸物品。
A. 保管
B. 使用
C. 储存
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答案
A
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【单选题】
多孔粒状铵油炸药的装药密度为0.90g／cm3～0.93g／cm3时，爆速一般为___。
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B. 2700m／s
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对于一般民用建筑物，当主振频率在10Hz＜f≤50Hz范围时，其爆破振动安全允许标准为___cm/s。
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