若易燃气体泄漏，所有堵漏行动必须采取（）措施，确保安全。
A. 防爆
B. 防中毒
C. 防腐
D. 防静电
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辽在阿保机时期收编的第一支汉人部队，请问这支部队史称（）。
Your company has two SQL Server 2005 computers named SQL1 and SQL2. Transaction log shipping occurs from SQL1 to SQL2 by using default SQL Server Agent schedule settings. You need toreconfigure transaction log shipping to provide minimum latency on SQL2. What should you do?（）
A. On SQL1, reschedule the transaction log backup job so that it occurs every minute. On SQL2, maintain default schedule settings for both the log shipping copy and the restore jobs.
B. On SQL1, change the schedule type for the transaction log backup to Start automatically when SQL Server Agent starts. On SQL2, change the schedule types for both the log shipping copy and the restore jobs to Start automatically when SQL Server Agent starts.
C. On SQL1, maintain default schedule settings for the transaction log backup job. On SQL2, change the schedule types for both the log shipping copy and the restore jobs to Start automatically when SQL Server Agent starts.
D. On SQL1, reschedule the transaction log backup job so that it occurs every minute. On SQL2, reschedule both the log shipping copy and the restore jobs so that they occur every minute.&e
数控机床的自动换刀装置中，刀库选刀方式有（）和任意选刀两种。
七夕节，按宁化传统习俗，有搭彩棚、设案焚香、陈列果品、教幼儿跪诵和书写等活动，民间称之为（）
A. 拜师
B. 诵习
C. 乞巧
D. 拜月
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