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[主观题]
The architecture is harmonious and no building is over six-storey high. ()
The architecture is harmonious and no building is over six-storey high. ()
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The architecture is harmonious and no building is over six-storey high. ()
第3题
均压技术是煤矿常见的()。
A 防灭火技术 ;
B 瓦斯治理技术;
C 防止透水技术;
D 降低矿尘技术
第7题
A.均压防灭火技术
B.注氮防灭火技术
C.灌浆防灭火技术
D.惰性气体防灭火技术
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