题目内容

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

A. 对
B. 错

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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

注射器容器使用之前要进行质量检查,包括()

A. 物理检查
B. 化学检查
C. 装药试验
D. 耐摔检查

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