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【单选题】
[3-116]Fog is most commonly associated with a(n) ___ .雾通常与夜间的暖锋有关。A.
warm front at night 夜间的暖锋
B.
low pressure area 低压区
C.
anticyclone 反气旋
D.
lack of frontal activity 缺少锋面活动
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【简答题】试证两个相同材料的薄凸透镜组合消放大率色差的条件是 ，式中d表示两薄透镜的间距。
【单选题】Analyze the following statement, and then choose one of the options that you think is best to use in academic writing:These results suggest a possibility that CTD could change its position relative to...
A.
These results suggest that under specific conditions, CTD changes its position relative to NHL domain
B.
We assume that these results suggest that CTD could change its position relative to NHL domain under certain conditions.
C.
These results might suggest that CTD changes its position relative to NHL domain, at least under certain conditions.
D.
We believe that CTD could change its position relative to NHL domain under certain conditions.
E.
These results make us believe that CTD could change its position relative to NHL domain.
【简答题】设薄透镜由折射率为n L 的材料组成，物方和像方的折射率分别是n和n'，导出其相位变换函数(用透镜的焦距表示出来)．
【简答题】以陕北民歌“信天游”的形式写成的抒情诗代表作是《 》。建国后,其诗歌类型分为两类,一类是 ,如《桂林山水歌》;一类是长篇政治抒情诗,如《雷锋之歌》。
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