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起止时间:2020-03-02到2020-04-29
更新状态:已完结
3. NAND GATE 第一单元测验
1、 What is an analog signal?
A:Analog signal is a continuous values
B:Analog signal is a discrete values
C: Analog signal is sometimes continuous, sometimes discrete
D:
答案: Analog signal is a continuous values
2、 How do we hear the amplified sound ?
A:Sound waves are picked up by a speaker and converted to a small analog voltage called the audio signal, then the voltage are sent to the microphone.
B:Sound waves are picked up by a microphone and converted to a small analog voltage called the audio signal, then the voltage are sent to the speaker .
C:Sound waves are picked up by a microphone and converted to a small digital voltage called the audio signal, then the digital voltage are sent to the speaker
D:
答案: Sound waves are picked up by a microphone and converted to a small analog voltage called the audio signal, then the voltage are sent to the speaker .
3、 Which of the following are not correct
A:Audio signal is an analog signal.
B:Most things that can be measured quantitatively occur in nature in analog form.
C:An analog quantity is one having continuous values.
D:The air temperature is a continuous value.
答案: The air temperature is a continuous value.
4、 In series circuit ,the current flowing through each element is ( )
A:of the same value
B: proportional to resistance
C:inversely proportional to resistance
D:
答案: of the same value
5、 In which circuit all devices could be controlled by one switch ?
A:parallel circuit
B:series circuit
C:series parallel circuit
D:
答案: series circuit
6、 Which is the characteristic of parallel circuits?
A:same voltage
B: different voltage
C:same current
D:
答案: same voltage
7、 The terminal voltage of all parallel components is of （ ）
A:the same voltage.
B:the different voltage
C:the same current
D:the different current
答案: the same voltage.
8、 what is IR drop?
A: the product of current and voltage
B:infrared radiation
C:investor relation
D:
答案: the product of current and voltage
9、 which is the right expression for C=A×B
A:C is the sum of A and B
B:C is equal to the product of A and B
C:
D:
答案: C is equal to the product of A and B
10、 The result of A÷B is called ( )
A:sum
B:difference
C:quotient
D:product
答案: quotient
6 The Package Technology of IC 第二单元测验
1、 The first integrated circuit was invented by ( )
A:Thomas Edison
B: Jack Kilby and Robert Noyce
C: Newton
D:Albert Einstein
答案: Jack Kilby and Robert Noyce
2、 Wafer preparation excludes
A:cleaning
B:layering
C:probing
D: doping
答案: doping
3、 The process of photolithography excludes ( )
A:coating
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