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【单选题】
设R1和R2是集合上的相容关系，则R1⊕R2
A.
一定是相容关系
B.
一定不是相容关系
C.
可能是也可能不是相容关系
D.
一定是等价关系
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举一反三
【单选题】The oldest university in New Zealand is
A.
the University of Edinburgh.
B.
the University of Auckland.
C.
the University of Otago.
D.
Harvard University.
查看完整题目与答案
【单选题】实验测得有源二端网络在关联参考方向下的外特性曲线如图 4.7 所示,则其戴维南等效电路的参数为( )。
A.
U O C = 2V R i = 1 Ω
B.
U O C = 2V R i = 0.5 Ω
C.
U O C = 4V R i = 2 Ω
D.
U O C = － 2V R i = 2 Ω
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【简答题】加强餐饮成本管理的重要性。
查看完整题目与答案
【简答题】555 定时器的 TH 端、 TR 端的电平分别小于 2/3V cc 和 1/3V cc ,定时器的输出状态是 。
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【单选题】听力原文：M: Your university seems quite new. How old is it? W: Well, this building was built five years ago, but the school was founded over a century ago, in the early 1900s. Q: How old was the universit...
A.
5 years.
B.
Over 100 years.
C.
90 years.
D.
95 years.
查看完整题目与答案
【单选题】实验电路如图 1 所示,测得有源二端线性网络的外特性曲线如图 2 所示,则该网络的戴维宁等效电压源的参数 U S 和 R 0 分别为 ( ) 。 (a)2V , 2 W (b)4V , 0.5 W (c)4V , 2 W
A.
2V，2欧
B.
4V，0.5欧
C.
4V，2欧
查看完整题目与答案
【多选题】Complete the dialogue with the sentences below : 根据句意,将单句填恰当的地方使语句完整。 Tom: What are you going to do this Sunday? Peter: I have no idea. (36)_____ Tom: We’re going to play football with our friends. (3...
A.
I would love to.
B.
Can you come?
C.
How about you?
D.
See you at two.
E.
You must come before two.
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【单选题】听力原文：M: I wonder if the University has chosen the new president yet? W: Someone said they picked a person a few months ago. But I guess it was just a rumor. Q: What does the woman mean? (17)
A.
They have already chosen a president.
B.
They will choose a president in a few months.
C.
She thinks earlier reports that they chose a new president were false.
D.
She thinks the appointment will take effect soon.
查看完整题目与答案
【单选题】梁截面尺寸标注时用b*h表示,其中h代表( )。
A.
粱宽
B.
梁高
C.
梁长
D.
梁有效高度
查看完整题目与答案
【单选题】Would you like to go for a picnic with us? ______. What time are we going to meet?
A.
No, I can't
B.
Yes, I'm glad
C.
Yes, I'd love to
D.
I'd lik
查看完整题目与答案
相关题目：
【单选题】The oldest university in New Zealand is
A.
the University of Edinburgh.
B.
the University of Auckland.
C.
the University of Otago.
D.
Harvard University.
查看完整题目与答案
【单选题】实验测得有源二端网络在关联参考方向下的外特性曲线如图 4.7 所示,则其戴维南等效电路的参数为( )。
A.
U O C = 2V R i = 1 Ω
B.
U O C = 2V R i = 0.5 Ω
C.
U O C = 4V R i = 2 Ω
D.
U O C = － 2V R i = 2 Ω
查看完整题目与答案
【简答题】加强餐饮成本管理的重要性。
查看完整题目与答案
【简答题】555 定时器的 TH 端、 TR 端的电平分别小于 2/3V cc 和 1/3V cc ,定时器的输出状态是 。
查看完整题目与答案
【单选题】听力原文：M: Your university seems quite new. How old is it? W: Well, this building was built five years ago, but the school was founded over a century ago, in the early 1900s. Q: How old was the universit...
A.
5 years.
B.
Over 100 years.
C.
90 years.
D.
95 years.
查看完整题目与答案
【单选题】实验电路如图 1 所示,测得有源二端线性网络的外特性曲线如图 2 所示,则该网络的戴维宁等效电压源的参数 U S 和 R 0 分别为 ( ) 。 (a)2V , 2 W (b)4V , 0.5 W (c)4V , 2 W
A.
2V，2欧
B.
4V，0.5欧
C.
4V，2欧
查看完整题目与答案
【多选题】Complete the dialogue with the sentences below : 根据句意,将单句填恰当的地方使语句完整。 Tom: What are you going to do this Sunday? Peter: I have no idea. (36)_____ Tom: We’re going to play football with our friends. (3...
A.
I would love to.
B.
Can you come?
C.
How about you?
D.
See you at two.
E.
You must come before two.
查看完整题目与答案
【单选题】听力原文：M: I wonder if the University has chosen the new president yet? W: Someone said they picked a person a few months ago. But I guess it was just a rumor. Q: What does the woman mean? (17)
A.
They have already chosen a president.
B.
They will choose a president in a few months.
C.
She thinks earlier reports that they chose a new president were false.
D.
She thinks the appointment will take effect soon.
查看完整题目与答案
【单选题】梁截面尺寸标注时用b*h表示,其中h代表( )。
A.
粱宽
B.
梁高
C.
梁长
D.
梁有效高度
查看完整题目与答案
【单选题】Would you like to go for a picnic with us? ______. What time are we going to meet?
A.
No, I can't
B.
Yes, I'm glad
C.
Yes, I'd love to
D.
I'd lik
查看完整题目与答案