The listener has shut down unexpectedly. You want to view the listener log file and listener trace file to find the cause of the problem. How can you view the contents of the listener log file and the listener trace file?()
A. Open the file at the location specified by the BACKGROUND_DUMP_DEST parameter in the pfile.
B. Open the file at the location specified by the USER_DUMP_DEST parameter in the pfile.
C. Issue the SERVICES command at the LSNRCTL> prompt.
D. Issue the STATUS command at the LSNRCTL> prompt.
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逃生过程中可以作为体表遮盖物的理想材料是()
A. 沾湿的棉质厚窗帘
B. 沾湿的棉被
C. 沾湿的床单
D. 防火毯
用来定义细胞的增殖周期的两个时间段是()
A. G1期
B. G2期
C. M期
D. N期
E. S期
南京地铁ATP轨旁机柜主要采用的()冗余方式,用于保证设备安全和提高设备可用性。