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【简答题】
已知(a)、(b) CC4000系列 CMOS门电路,(c)、(d)、(e)为74系列TTL门电路。指出图3.3各门电路的输出是什么状态?(低电平L、高电平H或高阻态Z) (高、低、高阻用H、L、Z)Y1= Y2= Y3= Y4= Y5=
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反馈参考答案：
举一反三
【单选题】对于典型的前轮驱动车辆,通过修正前麦弗逊式悬架中的减震器支柱下部螺栓与转向节的连接孔,可以调节: ( )
A.
前束角
B.
前轮外倾角
C.
主销内倾角
D.
主销后倾角
【单选题】My son ____ coke , but now he ______ milk.
A.
used to drink; is used to drinking
B.
used to drinking; drinks
C.
used to drink used to drink
D.
used to drink; is drinking
【单选题】My teacher used to _______ a bike to school, but now he is used to ________ a car to work.
A.
ride, driving
B.
ride, drive
C.
riding, drive
D.
riding, driving
【单选题】The mineral oil is used in Dr. Li’periment to _____
A.
control the concentration of odours ina slightly detectable degree.
B.
act as a group of comparison with thatof the other smells.
C.
regulate the participants’ moods bydecreasing the smell’s concentration.
D.
protect the participants from losingsense of smell.
【单选题】The example of Dr. Prathap Reddy is used to stress that ______.
A.
discussion of the cross-border flow of talent sounded a somber note
B.
migrants sent huge amounts of money home
C.
colonialism has disappeared in India
D.
returning emigres are turning into ecomonic dynamos
【单选题】The example of Dr Prathap Reddy is used to stress that .
A.
discussion of the cross-border flow of talent sounded a somber note
B.
migrants sent huge amounts of money home
C.
colonialism has disappeared in India
D.
returning emigres are turning into economic dynamos
【单选题】The young man used to _____ to work, but he is used to _____ to work now. [ ]
A.
drive; walking
B.
drove; walked
C.
drive; walks
D.
driving; walk
【单选题】按( )需核查货证的,出境检验检疫关系人应配合出境口岸检验检疫机构完成检验检疫工作
A.
口岸查验管理规定
B.
出境货物换单凭证
C.
口岸检验检疫规定
D.
出境货物通关单
【单选题】Whose name is used to call New World 'America' ?
A.
Columbus.
B.
Vespucci.
C.
Francois Dr. ake.
D.
Cartier.
【单选题】As the little boy ______ milk now, he doesn’t want to eat any other food.
A.
used to drink
B.
used to drinking
C.
is used to drink
D.
is used to drinking
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