自由空间传播模型为()
A: L = 32.45 + 20log f + 20log d
B: L = 30.45 + 20log f + 20log d
C: L = 32.45 + 10log f + 10log d
D: L = 30.45 + 10log f + 10log d
A: L = 32.45 + 20log f + 20log d
B: L = 30.45 + 20log f + 20log d
C: L = 32.45 + 10log f + 10log d
D: L = 30.45 + 10log f + 10log d
举一反三
- 选择下列函数运行后的输出NestList[Log,10,3] A: {Log[10],Log[Log[10]],Log[Log[Log[10]]]} B: {10,Log[10],Log[Log[10]],10+Log[Log[Log[10]]]} C: {Log[10],Log[Log[10]],Log[Log[Log[Log[10]]]]} D: {10,Log[10],Log[Log[10]],Log[Log[Log[10]]]}
- What is the default filename for the component trace file?() A: CiscoMIV B: log C: CiscoMAD D: log E: CiscoMED F: log G: CiscoMCV H: log
- 中国大学MOOC: f(n)=O(g(n)) 则 log(f(n)) =O(log(g(n)))
- 命令tail -f /var/log
- CentOS操作系统的日志文件默认保存在哪个路径() A: /etc/log B: /var/log C: /usr/log D: /log