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【单选题】
高速铁路接触网接触线的高度一般为（）m。A.
5
B.
5.3
C.
5.7
D.
6.5
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举一反三
【简答题】测量误差可分为（）误差、粗大误差和随机误差。
【简答题】Mama had the curtains drawn to keep it cool so it was a little bit dark in there. ( )
【单选题】听力原文：(A) The pattern on the wallpaper is composed of complicated flowers. (B) The curtains are drawn. (C) A woman is sitting by the window. (D) There is more than one lamp in the suit.
A.
B.
C.
D.
【简答题】计算机的档次级别主要取决于 。
【单选题】The little field _______ with seaweed some weeks before, and the weeds _______ and whitened on the grass. A. had manured, had rotten B. had manured, had rotted C. had been manured, had rotten D. had b...
A.
had manured, had rotten
B.
had manured, had rotted
C.
had been manured, had rotten
D.
had been manured, had rotted
【简答题】测量误差可分为（）误差、系统误差和粗大误差。
【简答题】测量误差可分为( ) 、( )和粗大误差三种。
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