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【单选题】
小明今天学习了信号与系统课程后,回家后回忆起课程内容,信号与系统分析按方法可分为连续时间域分析和离散时间域分析。请问小明回忆的对么,为什么?
A.
正确
B.
错误。应该分为时域分析和频域分析
C.
错误。应该分为叶分析和拉普拉斯分析
D.
错误。应该分为叶分析和频域分析
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【单选题】The young boy usually eats what he wants ______ what he needs.
A.
because of
B.
instead of
C.
such as
【单选题】What he needs is a book. 本句子中主语是
A.
he
B.
what
C.
what he needs
D.
is
【单选题】What does the student mean when he says this? A.He is not sure whether he needs help.###SX
A.
What does the student mean when he says this? A.He is not sure whether he needs help.
B.
He is not sure whether the librarian would help him.
C.
He hesitates to bother the librarian.
D.
He is not sure whether he can find the information he needs.
【单选题】下面关于顺序文件的描述中,正确的是___________。
A.
顺序文件中的数据是以ASCII码的形式存放的
B.
每条记录的长度相同
C.
可通过编程方式随机地修改文件中的某条记录
D.
文件的组织结构复杂
E.
不能用Windows的记事本程序编辑
【单选题】从单证的用途来分,大致可以分为商业单据(商业发票、装箱单等)、货运单据(海运提单、空运单、托运单等)、保险单据和金融单据(汇票、支票和本票等)以及( )等。
A.
(A)海关发票
B.
(B)官方单据(原产地证书、海关发票、检验检疫证书等)
C.
(C)文件与凭证
D.
(D)其他服务
【单选题】从单证的用途来分,大致可以分为商业单据(商业发票、装箱单等)、货运单据(海运提单、空运单、托运单等)、保险单据和金融单据(汇票、支票和本票等)以及( )等。
A.
海关发票
B.
官方单据(原产地证书、海关发票、检验检疫证书等)
C.
文件与凭证
D.
其他服务
【单选题】What does the student mean when he says this?
A.
He is not sure whether he needs help.
B.
He is not sure whether the librarian would help him.
C.
He hesitates to bother the librarian.
D.
He is not sure whether he can find the information he needs.
【单选题】What ______to do if he needs the book?
A.
has he
B.
he has
C.
will he have
D.
he will have
【单选题】从单证的用途来分,大致可以分为商业单据(商业发票、装箱单等)、货运单据(海运提单、空运单、托运单等)、官方单据(原产地证书、海关发票、检验检疫证书等)以及( )等。
A.
保险单据和金融单据(汇票、支票和本票等)
B.
物流单据
C.
文件与凭证
D.
保险单
【单选题】Bread and butter ______what he needs for breakfast.
A.
is
B.
are
C.
being
D.
was
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