题目内容

就业市场是由人力资源供给、需求和（）等三个方面构成。

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结构混凝土的强度等级必须符合设计要求。用于检查结构构件混凝土强度的试件，应在混凝土的（）随机抽取。

A. 搅拌机出料口
B. 浇筑地点
C. 浇筑点或搅拌点
D. 振捣后

Your company has a single Active Directory forest that has an Active Directory domain named na.contoso.com. A server named Server1 runs the DNS Server server role. You notice stale resource records in the na.contoso.com zone. You have enabled DNS scavenging on Server1. Three weeks later, you notice that the stale resource records remain in na.contoso.com. You need to ensure that the stale resource records are removed from na.contoso.com. What should you do？（）

A. Stop and restart the DNS Server service on Server1.
B. Enable DNS scavenging on the na.contoso.com zone.
C. Run the dnscmd Server1 /AgeAllRecords command on Server1.
D. Run the dnscmd Server1 /StartScavenging command on Server1.

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简述脱硫B系统脱硫液流程。

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营养肝脏的主要血管是（）

A. 门静脉
B. 肠系膜上动脉
C. 肝固有动脉
D. 肝静脉

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