路测软件中PN扫描在优化工作中起（）作用.A.覆盖优化 B.邻区优化 C.参数调整 发布时间：2019-07-31 10:40 │ 来源：www.tikuol.com 题型：单项选择题 问题： 路测软件中PN扫描在优化工作中起（）作用.A.覆盖优化B.邻区优化C.参数调整D.容量优化
题型：单项选择题 阅读理解下面文章中有5处（第1~5题）需要添加小标题。请从以下选项（A、B、C、D、E和F）中选出符合各段意思的小标题，并在答题纸上将相应选项的标号涂黑。选项中有一项是多余选项。A.What is the field trip fee at the Marine Science Center?B.What should we prepare for the visit? C.Where do the students get dropped off?D.Why should I bring my class to the Marine Science Center?E.How many students can the Marine Science Center accommodate?F.When else is the bus needed during the school field trips?1. __________ The Marine Science Center offers nearly four hours of an educational adventure. Observing restoring Sea Turtles, lab experiments, taking our Exhibit Gallery challenge, and learning from educational beach activities are a unique and fun way to educate all ages about the fragile environment in Florida．2. __________ We require a 1 to 10 ratio of guardians to students. All guardians within that ratio are free. The fee is $3 per student and $6 per any extra adults. The fee includes a three and a half hour program with interactive activities for the students. Payment should be made upon the arrival to the Marine Science Center. Please make checks payable to: County of Volusia Marine Science Center.3. __________ This program can accommodate groups up to forty students. The students must be divided into groups of ten before arriving at the center. The students will be rotated(轮换) throughout all of the activities provided.4. __________ The Marine Science Center is located at 100 Lighthouse Drive in Ponce Inlet. If arriving by bus, please stop the bus on the north (right) side of Lighthouse Drive directly across from the Marine Science Center entrance sign. Students will be accompanied up the main sidewalk to the front entrance of the Marine Science Center. If arriving by separate cars, please park in the main parking lot to the right on Lighthouse Drive. Take the boardwalk to the Marine Science Center.5. __________ The bus must be available to take students to and from the Marine Science Center and Lighthouse Point Park during the field trip for beach activities. Upon arrival the driver will get specific instructions on your program schedule. 查看答案
题型：单项选择题 ADSL技术提供的非对称带宽特性，其下行速率在（）A. 64kbps-640kbpsB.640kbps-1.5MbpsC. 500kbps-7MbpsD.5Mbps-10Mbps 查看答案