皮皮学，免费搜题
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【单选题】
有髓神经纤维的髓鞘每隔一定距离出现间断，间断处被称为（ ）A.
神经核
B.
神经核
C.
氏结
D.
节间段
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Exclusive information is more persuasive than widely known data
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】Although I felt tired, I continued to walk around the city, because I wanted to see everything on my first day.
A.
正确
B.
错误
【单选题】Transverse frames are more widely spaced on a ship that is designed with the ______．
A.
Centerline system of framing
B.
Isometric system of framing
C.
Longitudinal system of framing
D.
Transverse system of framing
【简答题】Continued trade in these products is a threat to the (survive)______ of the species.
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