影响人体健康的四大因素是环境因素、卫生保健服务因素、生物学因素和生活方式。
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You work as a database administrator for Supportcenter.cn. You are working on Oracle Database 10g. To forward client connections to an instance, the listener must know information such as the name of the instance and where the instance’s ORACLE_HOME is located. How does the listener get this information?()
A. It gets it from the parameter file.
B. The listener prompts for details on startup.
C. The listener gathers information from the control file.
D. The instance automatically registers with the default listener.
E. The listener gets this information through thelistener.orafile.
废气分析是通过对焦炉中热煤气燃烧产生的废气中()含量的测定,来计算燃烧的空气系数,从而达到对燃烧情况检查的目的。
A. CO2
B. O2
CO2
D. CO2 O2 CO
WEDGE是以下()实体形成的命令。
A. 圆锥
B. 圆柱
C. 楔形
D. 球形
压缩机所消耗地单位理论功与循环地单位理论功相等。
A. 正确
B. 错误