道口铭牌应标明内容应包括（）、线名、里程、管理里程。
A.道口名称
B.平台长度
C.铺面宽度
D.看守人员
参考答案：A
Walt Whitman wrote down a great many poems to air his sorrow for the death of President ______, and one of the famous is “When Lilacs Last in the Dooryard Bloom’ d. ”
A．Washington
B．Lincoln
C．Franklin
D．Kennedy
与病理缩复环关系最密切的是（）
A.双胎妊娠
B.妊高征
C.前置胎盘
D.胎盘早剥
E.嵌顿性肩先露
