皮皮学，免费搜题
登录
搜题
【单选题】
According to information given in the passage, which of the following locations would probably yield the highest probability of finding a previously undiscovered papyrus fragment?A.
The ship of a royal messenger that sank off the Egyptian coast of the Mediterranean Sea in the third century Ｂ.Ｃ.
B.
The charred remnants of an ancient Egyptian palace that was burned by Roman troops in the first century Ｂ.Ｃ.
C.
The refuse heap of an ancient Egyptian town that was buried in the desert in the fifth century A.D.
D.
The private collections of French and British explorers from the nineteenth century Ａ.Ｄ. who first uncovered many of the principal sites of Egyptian archeology
E.
The library of a Hellenistic fishing village that sank into the marshes of the Nile Delta in the third century Ａ.Ｄ.
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】为实现均匀梯度的磁场 , 选用两块相同的磁铁 ( 磁铁截面积及表面磁感应强度相同 ) 该如何放置?
A.
N 极与 N 极相对 , 两磁铁极间留一等距间隙
B.
N 极与 S 极相对 , 两磁铁极间留一等距间隙
【简答题】三相交流电的特点有哪些？