资本收益率
同生变形构造
承运人与旅客、托运人、收货人因合同纠纷产生索赔或互相间要求办理退补费用时，责任方自接到赔偿要求书的次日起，一般应于（）天内向赔偿要求人做出答复并尽快办理赔偿。 ["30","20","15"]
有效持续期缺口
Which two of these statements best describe the benefits of the Cisco Compatible Extensions Program？ （Choose two.）（） [" offers a feature-rich implementation alternative to Wi-Fi certification"," accelerates the availability of innovative features while maintaining interoperability"," provides innovative features only on Cisco’s wireless client adapters"," provides an evolving set of specifications for interoperability"," eliminates the need for testing by providing innovative features to wireless client vendors through a one-time license fee"]
什么是NAT？
