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【判断题】
确定夹紧力的大小时,估算法和类比法是通常采用的方法。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
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【单选题】A cartoon series on Confucius was aired on TV, _____ the thinker was a 10-year-old boy, not an old man.
A.
from which
B.
in which
C.
from it
D.
in it
【简答题】凸轮机构的压力角越小，有效分力（），机构的传动性能（）。
【简答题】阅读理解。 Each time I see a balloon, my mind flies back to a memory of when I was a six-year-old girl. It was a rainy Sunday and my father had recently died. I asked my mom if Dad had gone to heaven. 'Yes...