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【单选题】
一正方形均匀薄板,已知它对通过中心并与板面垂直的轴的转动惯量为 J .若以其一条对角线为轴,则薄板对此轴的转动惯量为:A.
(1/4) J ．
B.
(1/2) J ．
C.
(2/3) J ．
D.
J ．
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【简答题】为查询Products表中,价格Price在5-10元之间的产品信息,请补全以下SELECT语句 SELECT ProductID,ProductName,Price FROM products WHERE_________ AND_________
【简答题】从产品表Products中可以查询单价UntiPrice最高的商品单价，正确的SQL是（）A. SELECT MIN（UntiPrice）AS 最高单价 FROM ProductsB. SELECT AVG（UntiPrice）AS 最高单价 FROM ProductsC. SELECT MAX（UntiPrice）AS 最高单价FROM ProductsD. SELECT MAXUntiP...
【单选题】—Did you see who the driver was? —No, so quickly, that I couldn’t gat a good look at his face.
A.
did the car speed by
B.
the car sped by
C.
does the car speed by
D.
the car speeds by
【单选题】Where __________ you this afternoon? I didn't see you. [ ]
A.
were
B.
did
C.
are
D.
was
【简答题】企业年度会计报表的保管期限为（ ）。
【单选题】---Did you go to see he play last night? ---Unluckily, I couldn’t it, But I am going to see it soom.
A.
do
B.
manage
C.
make
D.
take
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