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【单选题】
COO定位的中文名称是( )。A.
基于电波到达时差定位
B.
起源蜂窝小区定位
C.
基于电波传播时间定位
D.
到达角度定位
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皮皮学刷刷变学霸
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【简答题】编码细菌毒力的质粒为
【简答题】How long has this been going on?
【单选题】—How long has this bookstore been in business? —_______ 1996.
A.
After
B.
In
C.
From
D.
Since
【单选题】How long has this study been ongoing at the point of this speech?
A.
75 years
B.
58 years
C.
65 years
D.
47 years
【单选题】听力原文：M: Now, then, Mrs. Darcy. How long has this tooth been giving you trouble? W: Well, I had it filled last year and was all right until last Sunday. Then it started hurting again. Q: How long has t...
A.
For a few days.
B.
For several weeks.
C.
Since last year.
D.
For a few hours.
【单选题】— How long has this bookshop been in business?
A.
____ 1982.
B.
After
C.
In
D.
From
E.
Since
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