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【单选题】
氧化期反应是在( )进行。A.
钢液中
B.
渣中
C.
钢-渣界面
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皮皮学刷刷变学霸
举一反三
【单选题】It i s the second time that the poor area_______.
A.
had been visited
B.
has been visited
C.
was visited
D.
is visited
【单选题】I think it ’ s high time that we ______strict measures to stop pollution.
A.
will think
B.
take
C.
took
D.
have taken
【简答题】医疗机构收治的隔离传染病病人或者疑似传染病病人产生的生活垃圾属于( )性废物
【单选题】It ’ s fortunate that I met a good teacher of Chinese. O therwise, I ______ on this tortured language a long time ago.
A.
would have given up
B.
had given up
C.
would give up
D.
gave up
【简答题】是通过改变现有酶分子的活性来调节代谢速率,包括酶活性的 和 。
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