工程监理合同适用于包括房屋建筑、市政工程等()个专业工程类别的建设工程项目,在通用条件中明确了()项工程监理基本工作内容()。
A. 13,21
B. 14,22
C. 13,22
D. 14,21
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SQL语句中()语句用于查询数据库中数据。
A. select
B. insert
C. delete
D. update
Which three statements are true about EIGRP operation?()
A. When summarization is configured, the router will also create a route to null 0.
B. The summary route remains in the route table, even if there are no more specific routes to the network.
C. Summarization is configured on a per- interface level.
D. The maximum metric for the specific routes is used as the metric for the summary route.
E. Automatic summarization across major network boundaries is enabled by default.
压浆用灰浆的拌合时间不得小于()灰浆在贮浆桶内,必须不断搅动,以防止水泥浆泌水沉淀,水泥灰浆自搅拌至压入管孔的时间间隔不得超过()。
A. 1分钟、40分钟
B. 2分钟、50分钟
C. 3分钟、40分钟