藻类
Click the Exhibit button. When designing a DWDM system with multiple amplified spans, a pre-amp is needed at Site B to （）. (Choose three.) offset the OADM loss at site b。 overcome the high multiplexer loss at site a。 amplify signal levels after the high loss through Fiber Span 1。 adjust add channels at site B to be at the same level as the passthrough channels。 ensure that the per channel power is higher than the minimum needed for the post-amp at Site。
在项目建议书阶段编制的投资估算是控制建设项目投资的依据。
Which three server types are supported for the installation of Cisco CRS?（） Cisco MCS 78xx servers。 Dell PowerEdge servers。 HP DL Cisco certified servers。 Acer Altos servers。 IBM xSeries Cisco certified servers。 Apple server。
以千粒重来划分白菜类种子属于（）。 超大粒种子。 大粒种子。 小粒种子。 中粒种子。
儿童在游戏中可以获得影响与控制环境的能力，建立起对自己的信心，获得成功的喜悦，这种现象表明游戏可以满足儿童（）
