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【简答题】
设四阶矩阵 且矩阵A满足关系式A(E－C－1B)TCT＝E，其中E为四阶单位矩阵，C－1表示C的逆矩阵，CT表示C的转置矩阵，将上述关系式化简并求矩阵A．
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举一反三
【单选题】喹诺酮类药物的抗菌机制为
A.
与细菌DNA回旋酶结合，阻止DNA的复制
B.
抑制以DNA为模板的RNA聚合酶
C.
抑制二氢叶酸合成酶
D.
与细菌核蛋白体50S亚基结合
E.
与细菌核蛋白体30S亚基结合
【单选题】Go Dutch can not be called___ .
A.
Dutch Date
B.
Dutch Treat
C.
Doing Dutch
D.
Visiting Dutch
【简答题】请问四个减三解决的调性
【单选题】咪唑类药物抗真菌的作用机制是
A.
抑制以DNA为模板的RNA多聚酶，阻碍mRNA合成
B.
影响二氢叶酸合成
C.
影响真菌细胞膜通透性
D.
竞争性抑制鸟嘌呤进入DNA分子中，阻断核酸合成
E.
替代尿嘧啶进入DNA分子中，阻断核酸合成
【简答题】A．The Dutch people will delay their referendum on the EU constitution. B．The Dutch government believes that it is not wise to follow the French government in vetoing the EU constitution. C．The Dutch p...
【单选题】In the Dutch citizenship test, all would-be immigrants are required
A.
to know a lot more about the country
B.
to watch a video
C.
to help immigrants accept the new culture
D.
to marry American citizens
E.
to do low-skill jobs
F.
to answer
【单选题】磺胺类药物的抗菌机制为（ ）
A.
作用于细菌核糖体30S亚基，抑制细菌蛋白质合成
B.
作用于细菌核糖体50S亚基，抑制细菌蛋白质合成
C.
作用于细菌的DNA旋转酶，干扰细菌DNA的合成
D.
阻止细菌二氢蝶酸合成酶
E.
特异性抑制细菌的DNA依赖性RNA多聚酶
【单选题】Americans are unwilling to live like the Dutch because they ______.
A.
love active ways of living in natural environment
B.
never give up their rosy dreams even in dark times
C.
like to live in places with strong cultural identities
D.
have always had visions of a more perfect residence
【单选题】the morning of June 27th, the team reached the top of the mountain .
A.
From
B.
At
C.
In
D.
On
【单选题】The Dutch played a leading role in commerce, shipping and in the 18 th century.
A.
politics
B.
business
C.
finance
D.
literature
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