丝裂霉素抑菌的作用机制是（） 抑制细胞壁合成。 抑制RNA合成。 抑制蛋白质合成。 抑制DNA复制。
You find today’s performance of your production database to be the best ever. Therefore， you want to be notified in the future whenever the performance degrades by 10% of today’s performance. What is the first step that you would take to ensure this？（） create baseline metrics for today’s performance。 write the current database metrics to a database table and create a trigger to compare with future database statistics。 write the current database metrics to a flat file and create an operating script to compare with future database statistics。 write the current database metrics to a database table and create a procedure to compare with future database statistics。 write the current database metrics to a database table and submit a job using DBMS_JOB to compare with future database statistic。
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You issued the following command on the temporary tablespace LMTEMP in your database: SQL>ALTER TABLESPACE lmtemp SHRINK SPACE KEEP 20M; Which requirement must be fulfilled for this command to succeed?（） The tablespace must be locally managed.。 The tablespace must have only one temp file.。 The tablespace must be made nondefault and offline.。 The tablespace can remain as the default but must have no active sort operations.。
与患者的沟通技巧包括（） 开放式提问。 认真聆听。 尽量使用专业术语。 注意掌握时间。 正确使用微笑，手势等肢体语言。
石先生，50岁。无吸烟史和肺部疾病史。因右半结肠癌在全麻下行右半结肠切除术。术后麻醉未清醒，呼吸时出现鼾声，此时首先采取的措施是（）
