If you have enclosed any documents along with the letter， you indicate this by typing“Enclosure”below the signature.

雾化治疗时能否同时使用止咳药

问答题雾化治疗时能否同时使用止咳药

汗蒸对缓解流感症状有帮助吗

问答题汗蒸对缓解流感症状有帮助吗

“I am writing to you about the possibility of pursuing ...

未知题型“I am writing to you about the possibility of pursuing a doctor’s degree in Finance in your prestigious University.” is an example of（）.