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【单选题】
关于三阶行列式说法正确的是( )
A.
若行列式的所有元素都等于零,则行列式的结果一定等于零
B.
若行列式的所有元素都等于零,则行列式的结果一定不等于零
C.
若行列式的所有元素都不等于零,则行列式的结果一定等于零
D.
若行列式的所有元素都不等于零,则行列式的结果一定不等于零
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【单选题】He hurried to the airport and got _______ the plane just in time.
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B.
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A.
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B.
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C.
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相关题目：
【单选题】He hurried to the airport and got _______ the plane just in time.
A.
on board
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in board
C.
on the board
D.
in the board
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A.
The college will suffer financially if the board reduces tuition.
B.
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