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【单选题】
风湿热急性期应用青霉素的目的是A.
控制急性心衰
B.
减少心瓣膜病的发生
C.
制止风湿活动的进展
D.
清除链球菌感染病灶
E.
防止继发感染
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【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。
【判断题】There is an overflow if we add two decimal numbers 21 and 11 in a 6-bit digital system.
A.
正确
B.
错误
【简答题】In a digital cable system, if there is no key to decode the signal, then, we will only see ______.
【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.
A.
正确
B.
错误
【单选题】In a digital communication system, the Nyquist interval of signal 【图片】should be millisecond (ms).
A.
1.25
B.
2.5
C.
5
D.
10
【单选题】A digital signal processing system usually operates in
A.
real time
B.
imaginary time
C.
compressed time
D.
computer time
【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.
A.
design entry
B.
logic simulation
C.
timing verification
D.
Logic synthesis
【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。
A.
正确
B.
错误
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