When observing a rapid rise in barometric pressure,you may expect().
In observing rig motion while under tow,the period of roll is the time difference between().
A latitude line will be obtained by observing a body ().
You are maintaining your OLTP database in Oracle10g. While observing the performance of the database, you find that the log switch occurs more than once for every 20 minutes, affecting the database performance. Which factor is responsible for frequent log switches?()
In general,the most effective period for observing stars and planets occurs during the darker limit of().
地球观测卫星EOS(Earth-Observing-Satellites)的任务背景是()