单项选择题
A. 贵重金属里包括黄金、白银和货币。 B. 诸如黄金和白银等这类贵重金属曾经作为货币使用过。 C. 贵重金属里的黄金、白银都被货币所替代。
Legal protection on a brand comes into fo...
判断题Legal protection on a brand comes into force only after registration.
The trademark symbols TM and ? can be e...
判断题The trademark symbols TM and ? can be exchanged in a brand.
A trademark may be regarded as a protecti...
判断题A trademark may be regarded as a protection for a brand name.
