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【单选题】
当某人力图同他人交往并建立亲近和睦关系时，其表现出的是（ ）A.
对权力的需要
B.
对成就的需要
C.
安全需要
D.
对社交的需要
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举一反三
【单选题】听力原文：M: Hi. I have some good news for you. W: What is it? M: The teacher suggested that we go on a trip this Saturday. W: Oh, wonderful. Where shall we go? M: How about going to the park? W: I don't t...
A.
A teacher and a student.
B.
Classmates.
C.
Father and daughter.
D.
Mother and son.
【单选题】听力原文：M: Hi, Jane, do you have some changes? I have to make a call on the pay phone. W: Pay phone? Why not use my mobile phone? Here you are. What will the man most probably do?
A.
Get some change from Jane.
B.
Go to look for a pay phone.
C.
Use the woman's phone.
D.
Pay for the phone call.
【单选题】听力原文：M: Hi, I have some good news for you. W: What is it? M: The teacher suggests that we go on a trip this Sunday. W: Oh, wonderful. Where shall we go? M: How about going to the zoo? W: I don't think...
A.
Teacher and student.
B.
Classmates.
C.
Father and daughter.
D.
Mother and son.
【简答题】已知电路如图所示，R 1 =R 2 =10Ω，R 3 =1Ω，R 4 =4Ω，R 5 =5Ω，U S1 =20V，U S2 =U S3 =10V，试求a、b、c、d、e、f点电位。
【单选题】听力原文：M: Hi. I have some good news for you. W: What is it? M: The teacher suggested that we go on a trip this Saturday. W: Oh, wonderful. Where shall we go? M: How about going to the park? W: I don't t...
A.
A teacher and a student.
B.
Classmates.
C.
Father and daughter.
D.
Mother and son.
【简答题】N型半导体中自由电子是 载流子,空穴是 载流子。
【简答题】已知电路如图所示，R 1 =20Ω，R 2 =R 3 =R 4 =R 5 =2Ω，R 6 =10Ω，I S1 =1A，U S2 =4V，U S3 =10V，U S4 =12V，U S5 =6V，U S6 =2V，试以o点为参考点，求φ a 、φ b 、U ab 。
【单选题】听力原文：W: Hi, Paul. All set for your speech club presentation this evening? M: Yeh, I'm going to discuss robots. W: Robots? You mean those machines that walk and talk like in the movies? M: No, industri...
A.
Industrial specifications.
B.
Computer development.
C.
Scientific drawings.
D.
Science fiction.
【简答题】已知电路如图所示，R 1 =R 2 =2Ω，R 3 =R 4 =1Ω，U S1 =5V，U S2 =10V，试求φ A 、φ B 、φ C 。
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