舰艇战位编号的编排顺序是（）
A、从前至后
B、由上到下
C、由内到外
D、右单左双
E、从下到上
参考答案：A, B, C, D
关于骨巨细胞瘤，下列哪项是错误的（）
A.多发于20~40岁的青壮年
B.好发于胫骨上端、股骨下端及桡骨远端
C.可有复发及转移
D.早期局部彻底切刮术加灭活处理是治疗的关键
E.Codman三角为其X线特点
It is well known that good relationship between two countries_____ the development of mutual culture and economy.
A．result from
B．arise from
C．contributes to
D．leads to
