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【单选题】
n 阶行列式所有元素均为1,则值为A.
n
B.
0
C.
1
D.
n!
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举一反三
【简答题】At first, the new fruit juice was very popular, but its success was only ___________ ; soon people stopped buying it because it had too much sugar.
【简答题】甲乙两人用光度法测定铝合金中微量锌的含量，结果如下。 甲：0.19%，0.19%，0.20%，0.21%，0.21% 乙：0.18%，0.20%，0.20%，0.20%，0.22% 比较两人测得值的精密度，分别以平均偏差和标准偏差表示。
【简答题】著名的《卡门》组曲是法国19世纪作曲家（）的代表作。
【单选题】（145—146共用题干） 一谷物的赖氨酸评分为0. 42，苏氨酸0. 70，蛋氨酸1.04，缬氨酸0.96，色氨酸1. 10 145.该谷物的氨基酸评分是
A.
0. 42
B.
0. 70
C.
1. 04
D.
0. 96
E.
1. 10
【单选题】When Jazz came into being at first, it soon became popular and was accepted by the upper-class.
A.
Y
B.
N
C.
NG
【单选题】The Autobiography by_______ is considered the first popular self-help book ever published. It was the first and only work written in America before the 19th century that has retained bestseller popula...
A.
Benjamin Franklin
B.
Ralph Emerson
C.
Anna Bradstreet
D.
Washington Irving
【简答题】Rum is a popular drink nowdays,on which islands was it first made comercially?
【简答题】现有数值如下:1.04,0.19,-0.23,0.68,-1.39,-0.47,-0.53,1.62,1.29,0.03,0.69,-0.31,-0.79,2.19,-1.06,-1.21,-0.2,0.56,0.35,-0.17,0.96,-1.04,2.28,-0.15,-0.1,0.12,0.22,-0.84,0.14,0.82,0.4,0.22,0.17,1.29,-0.72,1.59,-...
【简答题】现有数值如下:0.81,-0.95,-1.94,0.91,1.6,0.98,-0.29,-0.81,-0.35,0.72,0.77,1.72,-1.44,1.39,-0.88,-1.,0.23,-0.59,0.26,0.26,2.16,0.19,-0.09,-0.19,1.63,0.73,-0.58,0.03,-0.77,-0.4,0.15,1.47,-0.0,-0.04,-1.04,-0.0...
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