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搜题/搜资源
【单选题】【消耗次数:1】
When we came back, he found his bicycle ____
①
was stolen
②
had stolen
③
had been stolen
④
is stolen
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【多选题】
Its the_____________ coat that was stolen from me.
①
small
②
same
③
identical
④
identity
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【单选题】
A suitcase with shirt, trousers and shoes __________ stolen from the car.
①
have been
②
has
③
was
④
are
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【单选题】
I charge the man____ receiving stolen goods.
①
in
②
with
③
at
④
on
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【单选题】
When he came to,he found himself________on a chair,with his hands________back.
①
to sit;tying
②
sitting;tying
③
seating;tied
④
seated;tied
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【单选题】
When he came back after an absence of 20 years, he found his hometown completely ____. ?
①
changing ?
②
to be changed ?
③
to change ?
④
changed ?
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【单选题】
19. When he came to, he found himself _____ on a chair, with his hands _____ back.
①
to sit; tying
②
sitting; tying
③
seating; tied
④
seated; tied
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【单选题】
Only when we landed______ how badly the plane had been damaged.
①
we realized
②
did we realize
③
had we realized
④
we had realized
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【单选题】
20. Only when he had handed in his exam paper ____ he had made several mistakes.
①
he has realized
②
does he realize
③
has he realized
④
did he realize
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【判断题】
He had his leg break when he slipped on a piece of ice.
①
正确
②
错误
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【单选题】
3. He had to ______ his past actions when he retired, or he would be punished.
①
consider
②
account for
③
think
④
popular
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时序逻辑电路均包含有触发器。()
①
正确
②
错误
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要使与非门的输出为0,输入应满足______。
①
全为0
②
全为1
③
至少一个为1
④
至少一个为0
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【单选题】
已知奇校验位P的值是1,下列的ASCII码哪个符合条件:______。
①
P1010100
②
P1000010
③
P0100000
④
P0110001
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【单选题】
一个16位的二进制整数,用十进制数表示至少要______位。
①
4
②
6
③
5
④
7
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下列逻辑功能器件中______是译码器。
①
74LS00
②
74LS48
③
74LS138
④
74LS151
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【单选题】
在下列逻辑部件中,不属于组合逻辑部件的是______。
①
译码器
②
编码器
③
全加器
④
寄存器
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构成时序逻辑电路的基本单元最______。
①
编码器
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数据选择器
③
数值比较器
④
触发器
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下列触发器中______具有约束条件。
①
RS触发器
②
D触发器
③
JK触发器
④
T触发器
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3变量逻辑函数有______个最小项。
①
2
②
4
③
8
④
16
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【单选题】
根据等效关系的传递性,若有状态和等效,又有状态和等效,则状态和也等效。正确的写法是:______。
①
(,),(,)-à()
②
(),()-à()
③
(,),(,)-à(,)
④
(),()-à()
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