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【单选题】
以下关于常减压蒸馏干式向湿式操作切换的叙述，正确的是（）。A.
切换时减压炉出口温度应适当降低些
B.
切换时减压炉出口温度应适当升高些
C.
切换时常压炉出口温度应适当升高些
D.
切换时减压炉出口温度应适当降低些
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举一反三
【简答题】. 节气门位置传感器可分为 ___________ 、 __________ 和 __________ 三种。
【单选题】－Why didn’t Tom give you one of his paintings? －I didn’t want one，but he would have given me one if I______.
A.
did
B.
would
C.
will
D.
had
【单选题】I will talk to the children ______ .
A.
one and then the other
B.
first one then the next
C.
one by one
D.
in singles
【单选题】Our difference, ______, is one of method, not one of principle.
A.
which I see
B.
as I see it
C.
that I see
D.
I see
【单选题】— Have you seen______ pen? I left one here this morning. — Is it___________ black one? I think I saw it somewhere.
A.
the; the
B.
a; a
C.
the; a
D.
a; the
【单选题】The cakes are delicious. I’d like to have _______ third one as _______ second one I ate was too small.
A.
the, the
B.
a, the
C.
the, a
D.
a, a
【简答题】I think this one is bigger and (cheap) ______ than that one.
【简答题】- There must be a dozen pens in this house but I can never find one when I need one. - Keep looking. ______ is sure to turn up. A) One B) It C) That D) This
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