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【单选题】
下列关系中能构成函数的是( ),其中ymod3表示y除以3的余数。
A.
｛（x，y）｜（x，y∈N）∧（x＋y（10）｝
B.
｛（x，y）｜（x，y∈R）∧（y＝x2）｝
C.
｛（x，y）｜（x，y∈R）∧（y2＝x）｝
D.
｛（x，y）｜（x，y∈Z）∧（x≡ymod3）｝
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参考答案：
举一反三
【单选题】---It’s very important _____ us to make plans before a new term. ---Yes. You must try to make it carefully.
A.
of
B.
for
C.
to
D.
in
查看完整题目与答案
【多选题】样本均值的两个基本性质是:?
A.
若称样本中的数据与样本均值的差为偏差,则样本所有偏差之和为0
B.
数据观察值与均值的偏差平方和最小
C.
样本均值等于观测值的中值
D.
样本均值等总体均值
查看完整题目与答案
【单选题】()is very important that you don't make any mistakes when you calculate those figures.
A.
That
B.
What
C.
It
查看完整题目与答案
【单选题】婴幼儿喜欢成人的接触、抚爱,这种情绪反应的动因是为满足他们的( )。
A.
生理的需要
B.
情绪表达性需要
C.
自我调节性需要
D.
社会性需要
查看完整题目与答案
【单选题】---- ______! There is a bus coming. ---- Thank you very much for telling me. You saved my life!
A.
Good luck
B.
Watch out
C.
Cheer up
D.
Well done
查看完整题目与答案
【单选题】— It's very important us to make a plan before a new term. — Yes. You must try to make it carefully. [     ]
A.
of
B.
for
C.
to
查看完整题目与答案
【单选题】You were very impolite to him, for ______ you should make an apology to him, I think,
A.
this
B.
which
C.
what
D.
that
查看完整题目与答案
【判断题】数据观测值与均值的偏差平方和最小
A.
正确
B.
错误
查看完整题目与答案
【单选题】婴幼儿喜欢与成人接触、抚爱,这种情绪反应的动因是为满足儿童的( )
A.
生理的需要
B.
情绪表达性需要
C.
自我调节性需要
D.
社会性需要
查看完整题目与答案
【单选题】听力原文：W: You've got a new camera. It looks good and must be very expensive. M: It is good. But I got it for next to nothing. Q: What does the man mean about his camera? (19)
A.
He got the camera at a very low price.
B.
The camera is very expensive.
C.
The camera is worth nothing.
D.
He does not like the camera.
查看完整题目与答案
相关题目：
【单选题】---It’s very important _____ us to make plans before a new term. ---Yes. You must try to make it carefully.
A.
of
B.
for
C.
to
D.
in
查看完整题目与答案
【多选题】样本均值的两个基本性质是:?
A.
若称样本中的数据与样本均值的差为偏差,则样本所有偏差之和为0
B.
数据观察值与均值的偏差平方和最小
C.
样本均值等于观测值的中值
D.
样本均值等总体均值
查看完整题目与答案
【单选题】()is very important that you don't make any mistakes when you calculate those figures.
A.
That
B.
What
C.
It
查看完整题目与答案
【单选题】婴幼儿喜欢成人的接触、抚爱,这种情绪反应的动因是为满足他们的( )。
A.
生理的需要
B.
情绪表达性需要
C.
自我调节性需要
D.
社会性需要
查看完整题目与答案
【单选题】---- ______! There is a bus coming. ---- Thank you very much for telling me. You saved my life!
A.
Good luck
B.
Watch out
C.
Cheer up
D.
Well done
查看完整题目与答案
【单选题】— It's very important us to make a plan before a new term. — Yes. You must try to make it carefully. [     ]
A.
of
B.
for
C.
to
查看完整题目与答案
【单选题】You were very impolite to him, for ______ you should make an apology to him, I think,
A.
this
B.
which
C.
what
D.
that
查看完整题目与答案
【判断题】数据观测值与均值的偏差平方和最小
A.
正确
B.
错误
查看完整题目与答案
【单选题】婴幼儿喜欢与成人接触、抚爱,这种情绪反应的动因是为满足儿童的( )
A.
生理的需要
B.
情绪表达性需要
C.
自我调节性需要
D.
社会性需要
查看完整题目与答案
【单选题】听力原文：W: You've got a new camera. It looks good and must be very expensive. M: It is good. But I got it for next to nothing. Q: What does the man mean about his camera? (19)
A.
He got the camera at a very low price.
B.
The camera is very expensive.
C.
The camera is worth nothing.
D.
He does not like the camera.
查看完整题目与答案
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