J.Martin在分析分布数据规划的六种形式时,指出存在数据的同步问题,下列哪种数据不存在此问题
A.复制数据
B.子集数据
C.重组数据
D.划分数据
参考答案:D
— How will she deal with the work?
— She doesn't want to do it by herself. She wants to ask someone else to do it, . [ ]
A. yet
B. instead
C. too
D. either
货船压载情况下航行,其横摇周期一般为:().
A.6~9s
B.7~10s
C.9~14s
D.13~15s