题目内容

精神病人放火，没有人需要负责人

A. 对
B. 错

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防止烟气危害最简单的方法是用是用湿毛巾捂嘴逃生

A. 对
B. 错

TAF is the biggest producer of skincare and haircare products.

A. 对
B. 错

TAF has developed a variety of products to meet the demands of its customers.

A. 对
B. 错

R&D is responsible only for improving the existing products.

A. 对
B. 错