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【单选题】
What kind of workers does the writer like?A.
Those who get on well with the public.
B.
Those who have the same ideas as she does.
C.
Those who have big families and new ideas.
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【单选题】It is useful to be able to predict the extent _____ a price change will affect supply and demand.
A.
fromwhich
B.
withwhich
C.
towhich
D.
for which
【单选题】关于传感器场地定标的说法正确的是
A.
场地辐射定标的作用，是将遥感影像所记录的DN值转换为地表目标的反射率
B.
场地辐射定标的作用，是将遥感影像所记录的DN值转换为进入传感器的辐射亮度
C.
场地辐射定标的作用，是将地面目标反射率转换为进入传感器的辐射亮度
D.
场地辐射定标的作用，是将进入传感器的辐射亮度转换为地面目标的反射率
【单选题】It is easy to______ one state of matter from another.
A.
differ
B.
vary
C.
distinguish
D.
change
【简答题】Distinguish between a change of state and a phase change. Give an example of each.
【简答题】At Penn State University, engineers have designed aircraft wings that can change shape in different phases of flight, ______.
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