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【判断题】
档案在保管中要做到八防
A.
正确
B.
错误
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【单选题】设幂级数 的收敛半径为 ,则下面说法 错误 的是( )
A.
该级数与 有相同的收敛域.
B.
该级数的和函数在其收敛区间内可以任意次求导.
C.
若该级数在 处收敛,则其和函数在 上连续.
D.
若该级数在 处收敛,则该级数在 上一致收敛.
【简答题】In fact, the majority of state names in the U.S. (derive) ______ from Indian names.
【单选题】The utterances that perform. an act rather than state a fact or describe a state are called
A.
constative.
B.
speech act.
C.
performatives.
D.
discourse.
【简答题】______were sentences that did not state a fact or describe a state, and were not verifiable.
【简答题】翻译, In fact ,practically every royal head of state from the beginning of civilization toIn fact ,practically every royal head of state from the beginning of civilization to the French Revolution seeme...
【简答题】The trip to the United State opened my eyes to the fact that there are a lot of similarities as well as differences between American youth and French youth. The first difference is in appearance. Goin...
【单选题】Had it not been for the fact that about 30 pupils __________ in the state of Connecticut a fortnight ago, their parents ___________ in deep sorrow now.
A.
had been killed, wouldn’t be
B.
were killed, couldn’t be
C.
would have been killed, mightn’t be
D.
should be killed, wouldn’t be
【判断题】幂级数的和函数在其收敛区间内可导,并可逐项可导,且逐项求导后得到的幂级数和原级数有相同的收敛半径。
A.
正确
B.
错误
【简答题】设(1)函数f(z)在区域D内解析,f(z)≠常数; (2)C为D内任一条周线,只要求下列幂级数的收敛半径:求下列幂级数的收敛半径:
【单选题】下列结论正确的是:( )(1)幂级数在收敛区间内一定绝对收敛。(2)经过计算求得幂级数的收敛半径为R,则R一定是正常数。(3)幂级数在区间[-R,R]上连续。(4)幂级数的和函数S(x)在收敛域上连续。(5)幂级数在收敛域上逐项可微,可微后所得到幂级数与原级数具有相同的收敛域。(6)幂级数的收敛区间就是我们俗称的收敛域。(7)幂级数在收敛域上不可能条件收敛。(8)幂级数在收敛区间内逐项可积,...
A.
(1)(8)
B.
(1)(7)
C.
(1)(3)(8)
D.
(1)(3)(5)(8)
E.
(1)(2)(8)
F.
(2)(3)(5)
G.
(5)(6)(8)
H.
(4)(7)
I.
全部正确
J.
全部错误
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