问题
多项选择题
影响煤尘爆炸的因素有()。
A、煤尘浓度
B、煤尘粒度
C、介质氧浓度
D、引爆能量
答案
参考答案:A, B, C
影响煤尘爆炸的因素有()。
A、煤尘浓度
B、煤尘粒度
C、介质氧浓度
D、引爆能量
参考答案:A, B, C
用方框中词或短语的适当形式填空。 | |
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