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【单选题】
关于零阶保持抽样,下列叙述错误的是()A.
可看成理想冲激抽样经零阶保持后的结果
B.
抽样后的信号，其频谱仍然是原信号频谱周期延拓并加权得到
C.
需经过带补偿的低通滤波，无失真恢复原信号
D.
是信号在样点时刻展开为泰勒级数，取一次项的结果
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举一反三
【单选题】When dealing with materiality and scope limitation conditions:
A.
a disclaimer of opinion must be issued.
B.
it is easier to evaluate the materiality of potential misstatements resulting from a scope limitation than for failure to follow GAAP.
C.
scope limitations imposed by the client are always considered material.
D.
a unqualified opinion may still be issued depending on the materiality of the scope limitation.
【简答题】Space limitation simply required that hard decisions ______ ．(make)
【单选题】The spirit of the Great Charter was ______.
A.
a limitation of the powers of the king
B.
a guarantee of the freedom of the serfs
C.
a limitation of the powers of the Church
D.
a declaration of equality among all people
【简答题】A．degree B．qualifications C．quality D．limitation
【判断题】The limitation on credit can be classified into three types. They are country-to-country limitation and the item-to-item limitation and the country-to-item limitation.
A.
正确
B.
错误
【简答题】A．degree B．qualifications C．quality D．limitation
【单选题】The limitation of the trends method is the same as the persistence method in that____
A.
it makes predictions about weather
B.
makes predictions about precipitation
C.
the weather features need to be well defined
D.
the weather features need to be constant for a long period of time
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