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【判断题】
( )电气图中为避免线条太多,保持图而清晰,对于多条去向相同的连接线常采用单线表示。A.
正确
B.
错误
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【简答题】根据给出的短语，写出中文意思：electronic mail
【简答题】E-mail or electronic mail, is considered as the modem communication in the new age. It iscarried out in computers all over the world by millions of users. In this invisible world as many people call i...
【单选题】Electronic mail wasn't successful in the past because _________.
A.
the cost of electronic mail services was very high
B.
personal computers weren't widely used
C.
its users subscribed to different, unconnected mail services
D.
computer networks could not be connected globally
【单选题】(Electronic) mail to describe an upcoming workshop (should use) only (if) potential participants use this form. of communication (regularly).
A.
Electronic
B.
should use
C.
if
D.
regularly
【单选题】According to the passage, "electronic mail" is a way to _________.
A.
upgrade the old mail system
B.
get electronics by mail
C.
communicate by personal computers or computer terminals
D.
connect to the post office
【简答题】删除AdventureWorks数据库中的testldat4文件。
【单选题】Electronic mail has become an extremely important and popular means of communication. The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of un...
A.
heavy e-mail traffic
B.
fraudulent e-mail messages
C.
large volume of messages
D.
increasing amount of unwanted e-mail
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