【简答题】What kind of signals are there in a digital control system? Describe their properties. 数字控制系统有哪些信号类型,分别描述这些信号的特点。
【单选题】某地基采用强夯法加固,试夯后发现地基有效加固深度未达到设计要求,()的措施对增加有效加固深度最有效。
【判断题】There is an overflow if we add two decimal numbers 21 and 11 in a 6-bit digital system.
【判断题】Even in a large scale digital system, such as a computer, control, or digital-communication system, there are a lot of basic operations, which must be performed.
【单选题】In a digital communication system, the Nyquist interval of signal 【图片】should be millisecond (ms).
【单选题】A digital signal processing system usually operates in
【单选题】Which step is the process of deriving a list of physical components and their interconnections (called a netlist ) from the model of a digital system described in an HDL.
【判断题】实验室的终末消毒处理及对不耐热、不耐湿的贵重仪器设备如显微镜、离心机等的处理。可用甲醛熏蒸的方法进行消毒处理,将需要消毒的实验室内柜门,抽屉打开,污染的贵重仪器集中于1个房间内,封闭门窗。
【单选题】用单击夯击能为4000 kN·m来加固砂土,其有效加固深度可为( )m。