题目内容

JAVA中拆箱是指将基本数据类型的对象转为引用数据类型。( )

A. 对
B. 错

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在行列式的计算中用得最多的是行列式的性质6,因为运用它计算行列式时行列式值。

行列式中某个元素的余子式与其代数余子式或者相等或者互为。

He tried every means to keep that kind of evens _happening again.

A. from
B. on
C. in
D. at

_there is life on the moon is an interesting question.

A. whether
B. if
C. that
D. it

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