系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。

在Transact-SQL语句的WHERE子句中，完全可以用IN子查询来代替OR逻辑表达式。

报刊杂志中在论文经济资源时,经常提到信息、时间、知识、人才、矿藏、实物、资金等，请问这其中的哪些资源具有更为相同的属性？（）

Virus Security Software is designed to detect, eliminate or quarantine computer viruses before they are able to harm a computer or server networked system.

Air or noncondensable gas is removed from a refrigeration system by a （）

Turbocharging system may be designed to operate on either the （） or the constant pressure exhaust system.

（）is a space system using one or more artificial earth satellites.

（）is a space system using one or more artificial earth satellites.

电子银行根据业务测试方案搭建和维护测试环境，测试小组负责在测试环境中对系统进行集成测试、业务测试和（）。

可以在（）阶段采用Make-or-buy决策分析。

●A (68) is a feature of the system or adescription of something the system is capable of doing in order to fulfill the system's purpose.

Compensated flow control or constant flow valves are used in hydraulic systems to（）