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【多选题】
如何由单纯确定最优基?()A.
最优基各列所对应的基变量由最终单纯获得
B.
最优基各列所对应的基变量由初始单纯获得
C.
最优基各列的元素由最终单纯获得
D.
最优基各列的元素由初始单纯获得
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】How to adjust your speech if you receive negative audience responses?
A.
Adding another vivid example
B.
Starting to raise your voice drastically
C.
Speaking very fast to speed up
D.
Criticize the audience for not listening
【单选题】20120139下列关于Word的叙述中,不正确的是(39)。
A.
在“页面设置”对话框中可以自己定义打印纸张的大小
B.
设置文档打印时，输入“2-5”表示打印2页和5页
C.
页面视图方式的显示效果最接近实际打印的效果
D.
在普通视图方式下，人工分页符显示为一条虚线
【单选题】_________ in 1613, Harvard is one of the most famous universities in the United Stated.
A.
being founded
B.
Founded
C.
It was founded
D.
Founding
【简答题】25×1519＋1719×25%－14÷1613．0.25× 15 19 + 17 19 ×25%- 1 4 ÷1 6 13 ．
【单选题】John’s father _______ mathematics in this school ever since he graduated from Harvard University.
A.
teaches
B.
is teaching
C.
has taught
D.
taught
【单选题】How to adjust your speech if you receive negative audience responses?
A.
Starting to raise your voice drastically
B.
Adding another vivid example
C.
Speaking very fast to speed up
D.
Criticize the audience for not listening
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