图1中P点位置，同时符合①东半球；②北半球；③热带三个条件的是（）
A.
B.
C.
D.
参考答案：D
Stanford University was founded by Leland Stanford in 1884, _______________ his son who had died before.
A．in spite of
B．in case of
C．in memory of
D．in search of
轮式机械制动系的主要故障、现象和原因。
