单项选择题
Which of the following is not necessary to consider when surveying a potential site?（）
A. Space for antennas B. Frequency allocation C. Electrical power availability D. Contract with owner E. Availability of transmission to the BSC
单项选择题 Which cell pattern is recommended for use with frequency hopping?（）
单项选择题 What does Grade of Service (GoS) mean? （）
单项选择题 What type of interference is produced by other transmitters on the same frequency? （）
