您要查找的是不是：
- 频率预选择（FPS）frequency pre-selection(FPS)
- 频率预加重frequency preemphasis
- 当前“City”值在下拉列表中已预选择。The current City value is preselected in the drop-down list.
- 频率预校正电路preaccentuator
- 频率frequency
- 单项选择simple selection
- 参数选择preferences
- 不可预知的unpredictable
- 频率计cymometer
- 菜单选择menu selection
- 频率响应frequency response
- 自由选择freedom of choice
- 预交pre-pay
- 采样频率frequency of sampling
- 最佳选择the first option
- 第一选择the first option
- 战争胜负难以预卜。The outcome of the war is hard to foretell.
- 出现频率frequency of occurences
- 职业选择career choice
- 北京电台以十几种不同的频率进行广播。Radio Beijing broadcasts on a dozen different frequencies.
