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【单选题】
下列有关引航员软梯的提法不符合S0LAS公约的要求的是。A.
当从海面到登船入口处的距离超过9，不可单独使用软梯
B.
有二根系牢于船上的扶手绳
C.
有一根撇缆绳
D.
软梯的装设和引航员的登离水手长负责和管理
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举一反三
【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】In a digital system, information solely in discrete or quantized form. Normally,how many discrete states are used?
A.
4
B.
3
C.
2
D.
5
【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
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