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【单选题】
在Excel中,下面( )表示了单元格的位置。A.
A，1
B.
A1，A
C.
A1
D.
1A．A
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反馈参考答案：
举一反三
【单选题】设f(x)＝2x＋3x－2，则当x→0时( )．
A.
f(x)是x等价无穷小
B.
f(x)与x是同阶但非等价无穷小
C.
f(x)比x更高阶的无穷小
D.
f(x)是比x较低阶的无穷小
【单选题】设f(x)=2x+3x一2，则当x→0时( )．
A.
f(x)是x等价无穷小
B.
f(x)与x是同阶但非等价无穷小
C.
f(x)比x更高阶的无穷小
D.
f(x)是比x较低阶的无穷小
【单选题】设f(x)=2x+3x-2，则当x→0时，f(x)( )．
A.
与x是同阶但非等价无穷小
B.
与x是等价无穷小
C.
是比x较高阶的无穷小
D.
是比x较低阶的无穷小
【单选题】设f(x)＝22＋3x－2，则当x→0时( )．
A.
f(x)是x等价无穷小
B.
f(x)与x是同阶但非等价无穷小
C.
f(x)比x更高阶的无穷小
D.
f(x)是比x较低阶的无穷小
【单选题】回答下列各题： Looking back on my childhood，I am convinced thatnaturalists are born and not made．Al-though we werebwught up in the same way，my bwthers and sisters soonabandoned theirpressed flowers and insec...
A.
he was too young when helived with them
B.
he was fully occupied withobserving nature．
C.
he didn’t live very longwith them
D.
the family was extremelylarge
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