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【单选题】
Read the selection from the section "Goofy But Important." Mr. Barton's ideas might seem goofy. Yet he shows how scientists think about the world in new ways. What does the word "goofy" mean?A.
silly
B.
serious
C.
excited
D.
dangerous
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举一反三
【单选题】已知矩阵 ,下列命令中可以正确取出子矩阵 的命令是 。
A.
A(1:3,1:3)
B.
A(1:2,1:3)
C.
A([1 3],[1 3])
D.
A(1,3;1,3)
【单选题】UPS 线上发货的尺寸限制条件为（ ）
A.
无尺寸限制
B.
单个包裹单边≥270CM或围长(围长=长+2*宽+2*高)≥419CM的货物不能安排寄送。
C.
单个包裹长X宽X高不能超过30000立方厘米
D.
单个包裹单边长度不能超过190CM
【单选题】England and France are separated by 22 miles of open ocean at their closest point. Attempts to swim the English Channel have been made by people of all ages and from various walks of life. Each swimme...
A.
For a swimmer, conquering the English Channel is the dream of a lifetime.
B.
Many people have set shining examples in the marvelous conquering of the Channel.
C.
The invaluable advice provided by the Channel Swimming Association is the key to success.
D.
Luck and good timing play the most important part in the Channel swimmers' success.
【单选题】Anyone coming within 50 kilometers of these two nations-which, at their closest point, is all the ocean that separates them-can sense the social ripples, and the inevitable loss of face, that defeat i...
A.
Japan would spend more for the games than Republic of Korea.
B.
Republic of Korea would donate more of the profits from the games than Japan.
C.
Japan would gain more profits from the games.
D.
Both countries would spend any amount of money needed for hosting the games.
【单选题】UPS线上发货的尺寸限制条件为( )。
A.
无尺寸限制
B.
单个包裹单边大于等于270CM或围长大于等于330CM的货物不能安排寄送
C.
单个包裹单边长度不能超过274CM
D.
UPS国际快递小型包裹递送超过尺寸标准的包裹
【简答题】Matlab中求方阵逆矩阵的命令是
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