GSM-R模式下,机车功能号注册正确的是()
GSM-R采用了()。
Router R-1 is configured for BGP routing as shown below: router bgp 65300network 27.0.0.0neighbor 192.23.1.1 remote-as 65300 From the perspective of router R-1, what kind of router is the router with IP address 192.23.1.1?()
R-SGW
If 4r+7s = 23 and r- 2s = 17 then3r+3s = ______.
Moisture should be kept out of an R-12 system because it tends to cause ().
GSM-R采用了()。
当R-EACH采用预留接入模式的时候,它的接入前缀和接入消息承载信道错误的是:()
R&D项目可分为()。
R-12 is generally considered to be a safe, nontoxic, nonflammable, and non-explosive refrigerantIt can, however, become highly toxic when ().