题目内容

废气分析仪的工作原理是用取样头导管和泵从汽车或拖拉机的()采集废气。

A. 排气门
B. 排气管
C. 消声器
D. 消耗声器外

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利用电子商务服务站点(ASP、BSP)提供空间建设站点,企业只需提供有关材料,维护等工作有门户站点完成的网站实施方式为()

A. 租借
B. 外包
C. 自建
D. 托管

View the Exhibit to examine the output produced by the following query at three different times since thedatabase instance started and has experienced workloads of different capacities:SQL> SELECT substr(component, 0, 10) COMP, current_size CS, user_specified_size US FROM v$memory_dynamic_componentsWHERE current_size!=0;What do you infer from this()

A. The database instance is running with manual PGA management.
B. The database instance is running with manual shared memory management.
C. The database instance has the MEMORY_TARGET value set to a nonzero value.
D. All sessions are connected to the database instance in dedicated mode, and no RMAN or parallel queryoperations have been performed

对流层是大气的最低层,下界为地面,上界高度随纬度而变,在低纬度地区,平均为()千米;中纬度地区平均为10~12千米;极地平均为8~9千米。

广告的道德禁忌指的是:()。

A. 文字禁忌
B. 数字禁忌
C. 图形禁忌
D. 颜色禁忌

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