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【单选题】
牛顿三大定律是相互独立的,没有任何关系,对
A.
对。
B.
不对。三大定律看似相互独立,它们却组成了一个完整的科学体系,牛顿完成了人类科学历史上的第一次总结。
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参考答案:
举一反三
【单选题】有一直齿圆柱齿轮,m=4,z=36,它的齿高为 。
A.
4
B.
8
C.
9
【单选题】有一直齿圆柱齿轮,m=4,z=36,它的分度圆直径为 。
A.
124
B.
134
C.
144
【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径d为( )。
A.
152
B.
134
C.
144
D.
140
【单选题】The author cites the case of Johann Bachofen mainly to ______.
A.
show the value of studies on pre-modern women' s status
B.
justify the unchallenging works of earlier scholars
C.
present to readers an ancient women-ruled community
D.
prove the difficulty in the research of pre-modern cultures
【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径为( )mm。
A.
152.0
B.
134.0
C.
144.0
D.
140.0
【单选题】有一直齿圆柱齿轮,m=4,Z=36,它的分度圆直径为( )mm。
A.
152
B.
134
C.
144
D.
140
【单选题】Johann Strauss, as a composer, was more successful and popular than his father.
A.
very
B.
so
C.
even
D.
too
【简答题】简述双子叶植物叶的结构。
【简答题】Johann Gutenberg, who worked as a goldsmith (金匠), took what had already been discovered, and created a small invention that changed history. He created a machine that allowed him to move small blocks ...
【简答题】Johann Gutenberg, who worked as a goldsmith(金匠),took what has already been discovered, and created a small invention that changed history. He created a machine that allowed him to move small blocks of...
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