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二次型的话简主要是。

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She would like to book a single room with a private bath, overlooking the park preferably.

A. 对
B. 错

Each room is air-conditioned and has a freezer and cold water.

A. 对
B. 错

The hotel has three restaurants and a bar nearby.

A. 对
B. 错

初等变换不改变矩阵的秩对吗。

A. 对
B. 错