指导中的提问技巧有()、假设性提问、打分提问、转换型提问。
A.封闭型提问
B.开放型提问
C.例外型提问
D.预想型提问
参考答案:A, B, C, D
ORACLE RDBMS is a distributed DBMS. Which of the following techniques adapted ensure atomicity of distributed transaction
A. remote procedure call (RPC)
B. Two _phases commit (2PC)
C. Snapshots
D. triggers
SMTP通常使用那一个服务通道(port)?()
A.13
B.25
C.53
D.110