针对排水管道安全封堵,以下()项描述是正确的。
A. 先封上游管口,再封下游管口
B. 先封下游管口,再封上游管口
C. 上、下游管口同时封堵
D. 以上描述都正确
整个切换过程由BSS系统与MSC共同完成,其中BTS负责测量()
A. 下行链路性能和邻区接收电平上行接收电平与质量
B. 空闲的话务信道上检测干扰电平
C. BTS发射功率
You have created a locally managed tablespace by issuing the following command: CREATE TABLESPACE data1 DATAFILE ’data1_file1.dbf’ SIZE 10M AUTOEXTEND ON MAXSIZE UNLIMITED; For the DATA1 tablespace, you have set the warning level alert limit to 70 percent. In which situation will a warning level alert be generated?()
A. when 700 KB is used
B. when 700 KB is left as free space
C. when 7MB is used
D. when 7MB is left as free space
E. no alert will be generated because an autoextensible datafile is included in the tablespace
需辨别客户的异议有哪几种()
A. 真实异议
B. 隐藏异议
C. 虚假异议
D. 查询异议