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【单选题】
在气相色谱检测器中通用型检测器是( )A.
氢火焰离子化检测器
B.
热导池检测器
C.
示差析光检测器
D.
火焰光度检测器
E.
氮磷检测器
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举一反三
【单选题】Great changes ___ in the city, and a lot of factories _____. A. have been taken place; have been set up B. have taken place, have been set up C. have taken place, have set up D. were taken place, were...
A.
have been taken place; have been set up
B.
have taken place, have been set up
C.
have taken place, have set up
D.
were taken place, were set up
【简答题】[A] set on [B] set up [C] set out to [D] set forth
【单选题】They are going to ______ a new factory in the country. [ ]
A.
set up
B.
set
C.
setting up
【单选题】This is a photo of the power station that ______ in my hometown. [ ]
A.
has set up
B.
has been set up
C.
will set up
D.
is set up
【简答题】A．set off B．set out C．set in D．set up
【简答题】A．set forth A．set aside C．set up D．set down
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