配电变压器低压侧应装设熔断器,100kVA以上的配电变压器低压侧熔断器的额定电流一般可按变压器额定电流的()选择。
A. 1倍
B. 1.5~2倍
C. 2~3倍
D. 2.5~3倍
留取便隐血标本时,检查前3天可摄入的食物是()
A. 瘦肉
B. 鸡蛋
C. 猪肝
D. 铁剂
E. 油菜
招聘成本评估是鉴定()的一个重要指标,如果成本低,录用人员质量高,就意味着招聘效率高,反之,则意味着招聘效率低。
You have an Exchange Server 2010 Mailbox server.You need to ensure that deleted mailboxes are kept for 60 days.What should you do?()
A. Create a Retention Policy.
B. Create a managed folder mailbox policy.
C. Modify the properties of the mailbox database.
D. Modify the properties of the Mailbox server object.