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【单选题】
重复频率为1000Hz的,经过一截止频率为2000hz的理想低通滤波器后的输出量为( )。
A.
1000Hz失真的
B.
1000Hz的正弦波
C.
2000HZ的正弦波
D.
不知是什么信号
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参考答案：
举一反三
【单选题】Jimmy was sad. Everyone was trying to _____. [     ]
A.
cheer Jimmy up
B.
cheer him up
C.
cheer up Jimmy
D.
cheer up him
查看完整题目与答案
【单选题】Her parents _____ at home. [     ]
A.
is
B.
isn't
C.
must
D.
aren't
查看完整题目与答案
【单选题】No one but her parents _____ it.
A.
know
B.
knows
C.
is knowing
D.
are knowing
查看完整题目与答案
【单选题】Her parents _____ her to take some exercise but without result. Her parents _____ her taking some exercise but without result.
A.
suggested
B.
persuaded
C.
tried to persuade
D.
managed to suggest
查看完整题目与答案
【单选题】Cheer up !Keep on trying and you will succeed in the end.
A.
十杯
B.
振作起来
C.
激励
查看完整题目与答案
【单选题】Her parents aren’t getting _____ very well.
A.
along
B.
to
C.
for
查看完整题目与答案
【单选题】—John isn’t happy today. Let’s go and ____. —Good idea.
A.
cheer up him
B.
cheer him up
C.
to cheer up
查看完整题目与答案
【单选题】A) Her parents thrived in the urban environment. B) Her parents left Chicago to work on a farm. C) Her parents immigrated to America. D) Her parents set up an ice-cream store.
A.
Her parents thrived in the urban environment
B.
Her parents left Chicago to work on a farm.
C.
Her parents immigrated to America.
D.
Her parents set up an ice-cream store.
查看完整题目与答案
【单选题】He looks upset. Let’s try to _____.
A.
cheer up him
B.
cheer him up
C.
cheer he up
D.
cheer up he
查看完整题目与答案
【单选题】My foreign friend, Tom, will come to _______. [     ]
A.
cheer me up
B.
cheer up me
C.
cheer me on
D.
cheer on me
查看完整题目与答案
相关题目：
【单选题】Jimmy was sad. Everyone was trying to _____. [     ]
A.
cheer Jimmy up
B.
cheer him up
C.
cheer up Jimmy
D.
cheer up him
查看完整题目与答案
【单选题】Her parents _____ at home. [     ]
A.
is
B.
isn't
C.
must
D.
aren't
查看完整题目与答案
【单选题】No one but her parents _____ it.
A.
know
B.
knows
C.
is knowing
D.
are knowing
查看完整题目与答案
【单选题】Her parents _____ her to take some exercise but without result. Her parents _____ her taking some exercise but without result.
A.
suggested
B.
persuaded
C.
tried to persuade
D.
managed to suggest
查看完整题目与答案
【单选题】Cheer up !Keep on trying and you will succeed in the end.
A.
十杯
B.
振作起来
C.
激励
查看完整题目与答案
【单选题】Her parents aren’t getting _____ very well.
A.
along
B.
to
C.
for
查看完整题目与答案
【单选题】—John isn’t happy today. Let’s go and ____. —Good idea.
A.
cheer up him
B.
cheer him up
C.
to cheer up
查看完整题目与答案
【单选题】A) Her parents thrived in the urban environment. B) Her parents left Chicago to work on a farm. C) Her parents immigrated to America. D) Her parents set up an ice-cream store.
A.
Her parents thrived in the urban environment
B.
Her parents left Chicago to work on a farm.
C.
Her parents immigrated to America.
D.
Her parents set up an ice-cream store.
查看完整题目与答案
【单选题】He looks upset. Let’s try to _____.
A.
cheer up him
B.
cheer him up
C.
cheer he up
D.
cheer up he
查看完整题目与答案
【单选题】My foreign friend, Tom, will come to _______. [     ]
A.
cheer me up
B.
cheer up me
C.
cheer me on
D.
cheer on me
查看完整题目与答案
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