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【判断题】
原料气中CO2含量过高,粗甲醇中的含水量增加,甲醇浓度降低,导致蒸汽消耗升高。A.
正确
B.
错误
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举一反三
【单选题】She won't catch up with others ____ she studies harder.
A.
after
B.
unless
C.
as soon as
【单选题】If you don't study hard, you won't ______ other students. [ ]
A.
come up with
B.
catch up with
C.
agree with
D.
play with
【单选题】______ quickly, _______ you won’t be able to catch the train.
A.
To get up; or
B.
Getting up; and
C.
Get up; or
D.
If getting up; but
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