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举一反三
【单选题】As a physician who travels quite a lot, I spend much time on planes listening to that terrible “Is there a doctor on board?” announcement. I’ve been ___26___ only once-for a woman who had merely faint...
A.
For
B.
About
C.
But
D.
So
【单选题】石灰窑燃烧温度太高，原因及处理方法不正确的是（）。
A.
太多的热量输入，减少热量输入
B.
过剩系数调整错误，调整过剩系数
C.
石灰结块，减少热量输入
D.
石灰石粒度小，提供合格的石灰石