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【简答题】
12 直角三角板ABc的边长BC=a，AC=b，开始时AB边靠在y轴上，B与坐标原点O重合。今使A点单调地沿y轴负方向朝O点移动，B点单调地沿x轴正方向移动，如图所示。 (1)设AC边与x轴平行时，即三角板处于图所示位置时，A点速度大小为υ A ，试求此时C点速度υ C 和加速度a C ； (2)取三角板从图1所示的初始位置到图3所示终止位置的过程，试求C点通过的路程S。
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【单选题】The solider made a hole in the wall, ______ he could see what was going on inside the cabin.
A.
on which
B.
at which
C.
through which
D.
in which
【简答题】体细胞中 DNA分子的复制过程是在__________________期进行的;生殖细胞中DNA分子的复制过程是在__________________期完成的。
【简答题】根据体型大小,贵宾犬分为 、 、 三种类型。
【单选题】The man who had fallen into the hole failed to answer any questions because he ______.
A.
had one of his legs broken
B.
was busy changing the axle
C.
had drunk too much wine
D.
was afraid to blame anybody
【单选题】What did the farmer do all day?
A.
He pulled cars out of the hole in the road.
B.
He filled the hole with water.
C.
He worked on his farm.
【单选题】某小儿 4个月,接种百白破三联疫苗12小时,体温37.2°C,局部红、肿、热、痛,红肿直径2.0cm,该小儿应考虑为:
A.
接种后全身反应
B.
接种后局部弱反应
C.
过敏性休克
D.
晕针
E.
接种后局部强反应
【简答题】Why has the dealer fixed the cards? [A] Because he has an ace in the hole. [B] Because he is dealing off the bottom. [C] Because he can get higher cards. [D] Because the stacks are against him.
【单选题】42 He knows ______ a lot more than Wagner ______ be able to pick a hole in his work offhand.
A.
such ... as to
B.
so ....as to
C.
such ...so as to
D.
too...as to
【单选题】The hiding man made a hole in the wall ______ he could observe the outside. [ ]
A.
in which
B.
by which
C.
through which
D.
with which
【单选题】某小儿4月,接种白日破三联疫苗12小时,体温37°C,局部红、肿、热、痛,红肿直径2.0cm,该小儿应考虑为:
A.
接种后全身反应
B.
接种后局部弱反应
C.
过敏性休克
D.
晕针
E.
接种后局部强反应
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