Examine the following set of RMAN commands: Which statement is true when the RMAN RUN block Is executed?（） The execution of the script fails because multiple channels cannot coexist.。 The script is executed and both the channels are used for the script execution.。 The new channel, CHI, is Ignored because a channel has been configured already.。 ration parameter DC1 is overridden because a new channel is allocated in RMAN RUN block.。
王某在本村西街有临街的住房两间，其将一间房屋改造成饭馆进行经营，所以应缴纳经营用房的房产税。
偏利共栖
Given: What is the result?（） Compilation fails.。 An exception is thrown at runtime.。 The code executes normally and prints "foo".。 The code executes normally, but nothing is printed.。
课题研究方法有（）、（）、（）、（）、（）、（）。
Which of the following will cancel only job 123 from printer lp01?（）
