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【单选题】
在命令窗口输入 A=[1 3 5;2 4 6;9 8 7]; B=[A,A'] ; B= ?A.
1 3 5 1 2 9 2 4 6 3 4 8 6 8 7 5 6 7
B.
1 3 5 1 2 9 2 4 6 3 4 8 9 8 7 5 6 7
C.
1 3 5 1 2 9 2 4 6 3 4 8 9 8 7 6 5 7
D.
1 3 5 1 2 9 2 4 6 4 3 8 9 8 7 5 6 7
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【单选题】Ford's announcement of cutting up to 30000 jobs by 2012 indicates that Ford ______.
A.
has the biggest health problem of the car industry
B.
has made profits from its health-care legacy
C.
has accumulated too heavy a health-care burden
D.
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【单选题】All whales fall into two groups, those with teeth and those without. Both beluga and dolphin belong to the suborder of toothed whales known as Odontoceti, along with porpoises, narwhals, pilot whales,...
A.
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B.
Differences between whales.
C.
Efforts to preserve whales.
D.
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