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【多选题】
下图是结构化分析和设计的数据流图(DataFlowDiagram,DFD),它有哪些缺点:
A.
数据和操作分散在数据流和加工中
B.
数据流不直接映射问题域
C.
一项数据在多个数据流程被多次加工导致信息膨胀
D.
分析模型与设计模型及编程实现不能映射
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参考答案：
举一反三
【单选题】听力原文：W: Sir, you've been using the Online Catalogue for quite a while is there anything I can help you find? M: Boy, I've got to write a paper about Hollywood in the 30s and 40s, and I'm really strugg...
A.
On the Internet.
B.
In a library.
C.
In a book store.
D.
In a historical museum.
查看完整题目与答案
【单选题】听力原文：M: Julie, I've heard you've got an online degree through distance learning. Congratulations! W: Thank you, Richard. That is attributed to the increased availability of the Internet throughout the...
A.
The benefits and disadvantages of distance education.
B.
How to get an online degree.
C.
The advantages of doing homework on the Internet.
D.
How to communicate with classmates on the Internet.
查看完整题目与答案
【单选题】听力原文：W: Sir, you've been using the online catalogue for quite a while, Is there anything I can do to help you? M: Well, I've got to write a paper about Hollywood in the 30s and 40s, and I'm really str...
A.
Searching for reference material.
B.
Watching a film of the 1930s'.
C.
Writing a course book.
D.
Looking for a job in a movie studio.
查看完整题目与答案
【单选题】I’ve ______ some pictures online.
A.
posted
B.
post
C.
posting
D.
posts
查看完整题目与答案
【单选题】听力原文：W: Sir, you've been using the online catalogue for quite a while, Is there anything I can do to help you? M: Well, I've got to write a paper about Hollywood in the 30s and 40s, and I'm really str...
A.
Searching for reference material.
B.
Watching a film of the 1930s.
C.
Writing a course book.
D.
Looking for a job in a movie studio.
查看完整题目与答案
【判断题】对于孤立磁核来讲,共振频率只取决于外加磁场的强度,当磁场强度一定时,其共振频率是一定的。
A.
正确
B.
错误
查看完整题目与答案
【单选题】五粮液、白兰地、加饭酒分别属于什么酒?
A.
白酒、果酒、黄酒
B.
白酒、黄酒、果酒
C.
白酒、配制酒、黄酒
D.
白酒、果酒、配制酒
查看完整题目与答案
【单选题】听力原文：W: Sir, you've been using the Online Catalogue for quite a while is there anything I can help you find? M: I've got to write a paper about Hollywood in the 30s and 40s, and I'm really struggling....
A.
bookshop
B.
newsstand
C.
laboratory
D.
library
查看完整题目与答案
【单选题】下列特征中,水霉属所不具有的是()。
A.
孢子囊的层出形成
B.
双游现象
C.
有性生殖产生卵孢子
D.
有性生殖产生接合孢子
查看完整题目与答案
【判断题】按照商品所有权转移所经过的环节的多少,商品流通渠道大致可以分为直接流通渠道、间接流通渠道。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】听力原文：W: Sir, you've been using the Online Catalogue for quite a while is there anything I can help you find? M: Boy, I've got to write a paper about Hollywood in the 30s and 40s, and I'm really strugg...
A.
On the Internet.
B.
In a library.
C.
In a book store.
D.
In a historical museum.
查看完整题目与答案
【单选题】听力原文：M: Julie, I've heard you've got an online degree through distance learning. Congratulations! W: Thank you, Richard. That is attributed to the increased availability of the Internet throughout the...
A.
The benefits and disadvantages of distance education.
B.
How to get an online degree.
C.
The advantages of doing homework on the Internet.
D.
How to communicate with classmates on the Internet.
查看完整题目与答案
【单选题】听力原文：W: Sir, you've been using the online catalogue for quite a while, Is there anything I can do to help you? M: Well, I've got to write a paper about Hollywood in the 30s and 40s, and I'm really str...
A.
Searching for reference material.
B.
Watching a film of the 1930s'.
C.
Writing a course book.
D.
Looking for a job in a movie studio.
查看完整题目与答案
【单选题】I’ve ______ some pictures online.
A.
posted
B.
post
C.
posting
D.
posts
查看完整题目与答案
【单选题】听力原文：W: Sir, you've been using the online catalogue for quite a while, Is there anything I can do to help you? M: Well, I've got to write a paper about Hollywood in the 30s and 40s, and I'm really str...
A.
Searching for reference material.
B.
Watching a film of the 1930s.
C.
Writing a course book.
D.
Looking for a job in a movie studio.
查看完整题目与答案
【判断题】对于孤立磁核来讲,共振频率只取决于外加磁场的强度,当磁场强度一定时,其共振频率是一定的。
A.
正确
B.
错误
查看完整题目与答案
【单选题】五粮液、白兰地、加饭酒分别属于什么酒?
A.
白酒、果酒、黄酒
B.
白酒、黄酒、果酒
C.
白酒、配制酒、黄酒
D.
白酒、果酒、配制酒
查看完整题目与答案
【单选题】听力原文：W: Sir, you've been using the Online Catalogue for quite a while is there anything I can help you find? M: I've got to write a paper about Hollywood in the 30s and 40s, and I'm really struggling....
A.
bookshop
B.
newsstand
C.
laboratory
D.
library
查看完整题目与答案
【单选题】下列特征中,水霉属所不具有的是()。
A.
孢子囊的层出形成
B.
双游现象
C.
有性生殖产生卵孢子
D.
有性生殖产生接合孢子
查看完整题目与答案
【判断题】按照商品所有权转移所经过的环节的多少,商品流通渠道大致可以分为直接流通渠道、间接流通渠道。
A.
正确
B.
错误
查看完整题目与答案
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