题型:填空题 — May I open the window to let in some fresh air?— ___________.[ ]A. Cheer up B. Take care C. Go ahead D. Never mind 查看答案
题型:填空题 SR7750查看系统已经打开的端口命令是()A.Show system connectionB.Show system portC.show running portD.Show system security 查看答案