蓄电池点火系中，与断电器触点并联的电容器的作用是（） ["改善起动性能","提高次级电压","吸收断电器触点火花，提高次级电压","提高触点振动频率"]
What is the difference between the transmitted power and the sensitivity of the receiver？ （） [" OSNR"," dispersion"," attenuation"," power budget"," amplifier spacing"," four wave mixing"]
使商业技能达到国际水平技术的关键点包括（） ["通过技术仓库集中客户数据","有效的客户访问、查询、报告i环境","先进的数据挖掘功能","有效率的商业活动管理和活动跟踪环境"]
A 2.5 Gb/s (OC-48 or STM-16) optical signal with a dispersion tolerance of 1200 ps/nm goes through fiber with 18ps/nm*km of dispersion. How many 15216-DCU-350 equivalents are needed for enough compensation after traveling 100 km?（） ["none","one","two","three","four"]
测试基站空调出风口温度时，空调设备必须要处于制（）状态 ["关闭","送风","除湿","制冷"]
茅盾创作的惟一的剧本是《（）》。
