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【简答题】
The flow of electrons through a conductor is called a current. 2.The basic unit in which current is measured is the ampere (amp). 3.When it is desirable to express a magnitude of current smaller than the ampere, the milliampere (mA) and the microampere ( μ A) units are used.
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【简答题】波特率是指 :
【单选题】That he will come to the conference has excited every one us.
A.
宾语从句
B.
主语从句
C.
表语从句
D.
同位语从句
【简答题】所谓波特率是指（）。
【简答题】That he will come to the discussion iscertain.
【单选题】It is ______ that he will come to help soon because he has just gone out.
A.
likely
B.
unlikely
C.
like
D.
dislike
【单选题】_____ is true that he will come to see us this evening. [ ]
A.
He
B.
This
C.
That
D.
It
【单选题】Five or more short blasts on a vessel’s whistle indicates that she is __ _.
A.
in doubt that another vessel is taking sufficient action to avoid a collision
B.
altering course to starboard
C.
altering course to port
D.
the stand-on vessel and will maintain course and speed
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