Which of the following EPIRBs is most likely to transmit a distress alert signal?
A. 9 GHz EPIRBs.
B. Ch 16 EPIRBs.
C. 406 MHz EPIRBs
D. 121.5 / 243 MHz EPIRBs.
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Which of the following statements is true?
A. The SART can be auto-operated in vertical position sometimes.
B. The SART can be auto-operated in parallel position at any time.
C. The SART can be auto-operated under the water sometimes.
D. The SART can be operated in float-free position when combined with EPIRB
若要开发一个信息系统,需要经过七个步骤:①规划②设计③分析④ 实施⑤测试⑥开发⑦维护。这七个步骤排序正确的是: 【
A. ①②③④⑤⑥⑦
B. ①②③⑥④⑤⑦
C. ①③②⑥⑤④⑦
D. ①③②⑥④⑤⑦
警务信息综合应用平台采用的系统架构模式是:( )
A. 主机-终端模式
B. C/S模式
C. B/S模式
D. 多层架构模式
公安人事管理信息系统属于: 【
A. 事务处理系统
B. 管理信息系统
C. 决策支持系统
D. 综合应用系统