At the airport, when making the self-introduction, you should introduce your name and country to the client.
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When introducing the colleague to the client, you should introduce his name, position and the company he is representing.
A. 对
B. 错
If your client is a gentleman, you don't need to offer to help him with the luggage.
A. 对
B. 错
红外吸收峰的数目一般比理论振动数目少，原因之一是有些振动是非红外活性的
A. 对
B. 错
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