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【简答题】
阅读轴类零件图,回答下列问题: 说明该零件图的表达方案(采用了哪些表达方法,各自的表达目的和/或表达内容)。 分析说明尺寸基准,列出图中所有定位尺寸。 说明该轴上有哪些结构(工艺结构、功能结构)及其相关尺寸。 说明图中有尺寸公差的表面有哪些,列出其尺寸及公差。 说明图中各表面的粗糙度要求。 说明图中几何公差(形位公差)的含义(被测要素、基准要素、公差特征项目及公差值)。
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【单选题】New ways to treat arthritis may provide an to painkillers .
A.
alternation
B.
alternatives
C.
alternative
D.
choices
【单选题】Some derieded(laugh at) the dream of sending a man to the moon as insanity . Others viewed it as just another strategic move in the Cold War chess match.
A.
illusion
B.
inability
C.
lunacy
D.
oddity
【单选题】New ways to treat arthritis may ( ) an alternative to painkillers.
A.
provision
B.
provide
C.
profit
D.
pronounce
【单选题】在航显电视上“状态”一栏中的“C〃代表()。
A.
航班到达
B.
航班延误
C.
航班离港
D.
航班取消
【单选题】New ways to treat arthritis may provide a(n) __________to painkillers.
A.
alternate
B.
resolution
C.
alternative
D.
solution
【简答题】A) It was 45 years ago that Neil Armstrong took the small step onto the suce of the moon that changed the course of history. The years that followed saw a Space Age of scientific, ...
【单选题】A lot of cities are trying new ways to treat garbage mainly because ____. (细节题)
A.
they need new materials made from garbage
B.
they are short of useful materials
C.
their traditional ways of dealing with wastes are not efficient.
D.
their environment is becoming more and more dirty
【简答题】The moon always ________(move) around the earth.
【单选题】New ways to treat arthritis may provide a(n) to painkillers.
A.
choice
B.
option
C.
alternative
D.
defect
【单选题】Some derided the dream of sending a man to the moon as insanity . Others viewed it as just another strategic move in the Cold War chess match.
A.
illusion
B.
inability
C.
lunacy
D.
oddity
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