管道试压时，穿跨越二级以上公路管段应单独试压，强度试验压力为设计压力的（）倍。 1.1。 1.25。 1.5。 2.5。
增大风量时，应开大送风机的入口挡板。
A shoot-out has erupted between your MS development teams using .NET and your Linux development teams using Java. Knowing that your database is in danger，which command would you use to back up your NOARCHIVELOG mode database using RMAN with compression？（） backup database all。 backup compressed database。 backup as compressed backupset database。 backup as compressed backup database plus archivelog all。 backup as compressed backupset database plus compress archivelog all。
In a Java EE messaging application, one MDB is consuming a lot of memory at high traffic. What configuration should you use to prevent possible out-of-memory error at high traffic and at the same time not losing messages?（） Configure a Work Manager for the MDB with a Maximum Thread Constraint.。 Configure a Work Manager for the MDB with a Minimum Thread Constraint. 。 Configure a Work Manager for the MDB with a Maximum Thread Constraint and a Capacity Constraint. 。 Configure a Work Manager for the MDB with a Minimum Thread Constraint and a Capacity Constraint. 。 Configure a Work Manager for the MDB with both a Maximum Thread Constraint and Minimum Thread Constraint.。
乙炔属于（）。 单质。 化合物。 混和物。 混合物。
You are maintaining your database in Oracle10g. You are required to view the list of files that have not been backed up for the last seven days. Which RMAN command will you use？（）
