开采突出煤层时,必须采取哪些综合防突措施?
参考答案:
突出危险性预测、防治突出措施、防治突出措施的效果检验、安全防护措施。
Don’t eat meat. If you do so, you’ll get fat.
A.much too; too much
B.too much; much too
C.much too; much too
D.too much; too much
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