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【多选题】
关于简单反应的优化,以下哪种说法是正确的?A.
随着反应级数的提高，达到相同的转化率，反应器和平推流反应器所需的体积比降低。
B.
对于零级反应而言，反应在反应器中或平推流反应器中获得的反应结果都相同。
C.
平推流反应器和反应器中反应结果的差别，仅与反应级数相关
D.
平推流反应器与反应器中反应结果的差别，与反应级数和反应过程转化率相关。
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【简答题】They were unable to think of an alternative ____ selling an equity stake.
【单选题】以下电力电子器件中既是全控型器件又是电压驱动型的器件是
A.
IGBT , GTO
B.
电力 MOSFET , GTR
C.
IGBT , 电力 MOSFET
D.
GTO , GTR
【简答题】You can change the sound of your music to become more professional by adding ______.
【单选题】以下电力电子器件中既是全控型器件又是电流驱动型的器件是
A.
IGBT , GTO
B.
电力 MOSFET , GTR
C.
IGBT , 电力 MOSFET
D.
GTO , GTR
【单选题】They were unable to ______ an explanation as to why an injury to one side of the head affected the opposite side of the body
A.
devise
B.
device
C.
decent
D.
revise
【单选题】From the last two paragraphs, it can be inferred that ______.
A.
once you become an alcoholic you can never quit drinking
B.
you can easily abstain from drinking once you make up your mind
C.
to abstain from drinking, one needs not only medical treatment but also personal determination
D.
a brief stay in the hospital can help one quit drinking
【单选题】They were unable to _____ the telephone network economically.
A.
work
B.
set
C.
run
D.
take
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