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【单选题】
凸轮机构从动件常用运动规律中,具有刚性冲击的是 规律。A.
等速运动
B.
等加速等减速运动
C.
简谐运动
D.
等加速等减速运动或简谐运动
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举一反三
【简答题】计算 10×10 2 ×10 3 =______，（ab） 4 =______．
【简答题】John Dunlosky described an enormous "meta-ysis" that he and his colleagues conducted to identify effective learning techniques that students can use to improve their learning. What three strategie...
【简答题】Rewrite the following sentences beginning with the words or phrases provided. 用所给的词或短语开头改写下列句子。(答题时把整个句子写完,包括已经给出的词和短语) His change of attitude was so sudden that we didn't know what to do. So sudden _...
【简答题】用 display proceed lodge deserve 几个词选词填空,注意大小写和时数变化。 5) The committee agreed that his papers __________ a wider circulation because of their essential and fundamental interest to a larger au...
【单选题】She ___ a claim for damage to the photographs.
A.
puts down
B.
puts off
C.
puts in
D.
puts up
【简答题】（2×10 -6 ）×（3.2×10 3 ）=______．
【单选题】移动通信使用的短波的波长范围是（ ）。
A.
10～1km（104～103m）
B.
1000～100m（103～102m）
C.
100～10m（102～10m）
D.
10～1m
【单选题】She ___ a claim for damage to the photographs.
A.
works out
B.
work out
C.
put in
D.
puts in
【简答题】(2×10 ﹣6 ）×（3.2×10 3 ）= _________ ．
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