题目内容

伐倒木区分求积式中误差百分率最大的是( )。

A. 牛顿近区分积式
B. 中央断面积区分求积式
C. 平均断面积区分求积式
D. 都一样

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采用区分求积的目的是提高( )测算精度。

在我国林业生产和科研工作中多采用( )求积式。

在同一树干上,某个区分求积式的精度主要取决于分段个数的多少,段数愈多,则精度( )。

Write an e-mail letter in response to Jack’s message according to the information given belowJack wrote you a message about computers the other day. You don’t know what kind of computer you will buy, but you`re thinking about buying the same kind of computer your brother has. You want to know what computer Jack has. Try to use a few acronyms in your e-mail if possible.

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