【简答题】 dialogues based on the following situation. The guest has booked a single room for September 12th to 16th. But he has to cancel the reservation for an important meeting. The reservationist answ...
【简答题】如何以大肠杆菌质粒DNA为载体克隆一个编码动物激素的基因,并使之在大肠杆菌中进行表达?简要说明实验中可能遇到的问题及可能的解决办法。
【简答题】如何以大肠杆菌质粒 DNA为载体克隆一个编码动物激素的基因,并使之在大肠杆菌中进行表达?简要说明实验中可能遇到的问题及可能的解决办法。
【单选题】Bird Flu is a(n) ___________ disease. Whenever it occurs, children should be kept from going to public places.
【单选题】H7N9 bird flu is a virus(病毒) can make people die. We’d better stay away from birds at present.
【简答题】Agriculture is not as important to the Canadian economy as it was in the 19th century, but it continues to be the mainstay on several regions and is a significant source of export income.
【简答题】以大肠杆菌质粒DNA为载体克隆一个编码动物激素的基因,并使之在大肠杆中表达,通常遇到的问题是什么?