上邻近层瓦斯抽采是指邻近层位于开采煤层的()部,通过巷道或钻孔来抽采上邻近层的瓦斯。
A.上
B.下
C.前
D.后
参考答案:A
If I were in a movie, then it would be about time that I ____my head in my hands for a cry.
A.bury
B.am burying
C.buried
D.would bury
下列属于人工湖的是( )。
A.台湾日月潭
B.千岛湖
C.松花湖
D.红枫湖
E.内蒙古乌梁素海