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【单选题】
以下_____不属于Inmarsat-C 系统的编码类型。(130354:第3章 Inmarsat-C系统) (A-0,B-0,C-0,D-0,错误-0)A.
5bit
B.
6bit C、7bit
C.
8bit
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【简答题】h ere
【单选题】T h ere are two hundred______i n our school .
A.
woman teacher
B.
women teacher
C.
women teachers
【简答题】____________ is any person who notices and give some meaning to a message. H ere are the students.
【单选题】已知一对正确安装的标准渐开线圆柱齿轮传动,其压力角ɑ=,模数m=4mm,传动比i12=3,中心距a=144mm。则两齿轮的分度圆直径分别为
A.
18mm和54mm
B.
20mm和40mm
C.
72mm和216mm
D.
80mm和224mm
【单选题】T h ere is no doubt the company has made the right decision on the sales project.
A.
why
B.
that
C.
whether
D.
when
【单选题】Han Han is one of writers, though some old writers don’t like him very much.
A.
more famous
B.
most famous
C.
the most famous
D.
famous
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