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【多选题】
放炮崩倒棚子主要原因有( )。
A.
支架架设质量差
B.
放炮前没有检查或加固放炮地点附近的支架
C.
爆破参数选择不合理
D.
爆破后产生大块煤.岩抛向支架
题目标签：棚子
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举报参考答案：
举一反三
【单选题】Nasreddin had a shed(棚子)behind his house. It had no lights in it. One night he went out to the shed to get his ladders(梯子)and lost his ring(戒指)there. He left the ladder, went out into the street and b...
A.
ring
B.
silver
C.
money
【单选题】Nasreddin had a shed(棚子)behind his house. It had no lights in it. One night he went out to the shed to get his ladders(梯子)and lost his ring(戒指)there. He left the ladder, went out into the street and b...
A.
in his house
B.
in the street
C.
behind the house
相关题目：
【单选题】Nasreddin had a shed(棚子)behind his house. It had no lights in it. One night he went out to the shed to get his ladders(梯子)and lost his ring(戒指)there. He left the ladder, went out into the street and b...
A.
ring
B.
silver
C.
money
【单选题】Nasreddin had a shed(棚子)behind his house. It had no lights in it. One night he went out to the shed to get his ladders(梯子)and lost his ring(戒指)there. He left the ladder, went out into the street and b...
A.
in his house
B.
in the street
C.
behind the house
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