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图中给出的电路是一个积分电路,输出信号u0与输入信号ui满足积分关系:u0=-1/RC∫ui(t)dt因此,输入信号ui为方波信号,经过积分电路后将被变换为一个三角波信号u0。反之,一 个三角波信号经过积分变换后被变换为一个方波信号,积分电路实现了方波信号与三角波信号 间的变换,因此,选项C和选项D错。对于选项B,三角波信号的时间变化率错了。
在几种不同类型的软件维护中,通常情况下()所占工作量最大。
在()中,项目经理的权力是最小的。
在项目实施的过程中,项目经理通过项目周报中的项目进度分析图表发现机房施工进度有延期风险。项目经理立即组织相关人员进行分析,下达了关于改进措施的书面指令。该指令属于( )
The IT service manager resigns from a project that meets the scheduleand budget. After hiring an alternativenew manager, the team is opposed to the comments from the new manager. The team is at () developmentstages。
()is closet to Deming's definition of Quality。
The IT service manager has learned that a software canimprove the efficiency of current and future project tasks. Because the software is fresh to the Company. Theengineer is not familiar with the software. The lT service manager decides to send the highest level engineero attend the external training course. The proiect manager uses () risk strategies。
The process control charts are used ()。