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【单选题】
What does the man find out at last?
A.
Fifteen minutes is too long.
B.
The traffic is moving too slowly.
C.
He is not able to carry both bags.
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参考答案:
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。
【单选题】天然木质素由木质素的前驱体经 ( )反应,形成相应的木质素基本结构单元:对羟基苯结构单元、愈创木基结构单元和紫丁香基结构单元。
A.
逐步聚合
B.
自由基偶合
C.
配位聚合
D.
阴离子聚合
【简答题】Mama had the curtains drawn to keep it cool so it was a little bit dark in there. ( )
【简答题】真空制动机的原理是,当制动阀手柄置于缓解位时, 与列车管连通;当置于制动位时,列车管与 相通。
【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 。
【简答题】测量误差可分为()误差、系统误差和粗大误差。
【单选题】【34】
A.
had had to
B.
had to
C.
has had to
D.
has to
【简答题】测量误差可分为( ) 、( )和粗大误差三种。
【判断题】测量误差可分为系统误差、偶然误差和粗大误差三类。
A.
正确
B.
错误
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