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【简答题】
某三相对称负載作星形联结,接在线电压为380V的三相对称电源上,若每相负载的阻抗为20Ω,功率因数为0.8,则加在每相负载两端的相电压UP= ,通过每相负载的相电流IP= ,线路中的线电流IL= ,负载消耗的总功率P= ,。
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参考答案：
举一反三
【多选题】坚持正确的舆论导向,好的舆论可以成为()
A.
发展的“推进器”
B.
民意的“晴雨表”
C.
社会的“粘合剂”
D.
道德的“风向标”
查看完整题目与答案
【判断题】线路纵断面图路肩设计标高栏中，在各变坡点，百米标和加标处注明路肩设计标高，单位为千米。
A.
正确
B.
错误
查看完整题目与答案
【多选题】坚持正确的舆论导向,好的舆论可以成为
A.
发展的“推进器”
B.
民意的“晴雨表”
C.
社会的“粘合剂”
D.
道德的“风向标”
E.
理论的“真利器”
查看完整题目与答案
【判断题】线路纵断面图路肩设计标高栏中,在各变坡点,百米标和加标处注明路肩设计标高,单位为 千米(中级线路工用)。
A.
正确
B.
错误
查看完整题目与答案
【单选题】What will be displayed by the following code? def f1(x = 1 , y = 2 ): x = x + y y += 1 print(x, y) f1()
A.
1 3
B.
3 1
C.
The program has a runtime error because x and y are not defined.
D.
1 1
E.
3 3
查看完整题目与答案
【单选题】Which statement about the following code block is right?deff(x):a=7print(a+x)a=5f(3)print(a)
A.
The output is 10 and 7.
B.
The output is 10 and 5.
C.
The output is 8 and 5.
D.
There will be an error.
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【单选题】What will be displayed by the following code? x = 1 def f1(): global x x = x + 2 print(x) f1() print(x)
A.
1 3
B.
3 1
C.
The program has a runtime error because x is not defined.
D.
1 1
E.
3 3
查看完整题目与答案
【单选题】What will be displayed by the following code? x = 1 def f1(): y = x + 2 print(y) f1() print(x)
A.
1 3
B.
3 1
C.
The program has a runtime error because x is not defined.
D.
1 1
E.
3 3
查看完整题目与答案
【单选题】What will be displayed by the following code? def f1(x = 1 , y = 2 ): x = x + y y += 1 print(x, y) f1( 2 , 1 )
A.
1 3
B.
2 3
C.
The program has a runtime error because x and y are not defined.
D.
3 2
E.
3 3
查看完整题目与答案
【单选题】What will be displayed by the following code? def f1(x = 1 , y = 2 ): return x + y, x - y x, y = f1(y = 2 , x = 1 ) print(x, y)
A.
1 3
B.
3 1
C.
The program has a runtime error because the function returns the multiple values
D.
3 -1
E.
-1 3
查看完整题目与答案
相关题目：
【多选题】坚持正确的舆论导向,好的舆论可以成为()
A.
发展的“推进器”
B.
民意的“晴雨表”
C.
社会的“粘合剂”
D.
道德的“风向标”
查看完整题目与答案
【判断题】线路纵断面图路肩设计标高栏中，在各变坡点，百米标和加标处注明路肩设计标高，单位为千米。
A.
正确
B.
错误
查看完整题目与答案
【多选题】坚持正确的舆论导向,好的舆论可以成为
A.
发展的“推进器”
B.
民意的“晴雨表”
C.
社会的“粘合剂”
D.
道德的“风向标”
E.
理论的“真利器”
查看完整题目与答案
【判断题】线路纵断面图路肩设计标高栏中,在各变坡点,百米标和加标处注明路肩设计标高,单位为 千米(中级线路工用)。
A.
正确
B.
错误
查看完整题目与答案
【单选题】What will be displayed by the following code? def f1(x = 1 , y = 2 ): x = x + y y += 1 print(x, y) f1()
A.
1 3
B.
3 1
C.
The program has a runtime error because x and y are not defined.
D.
1 1
E.
3 3
查看完整题目与答案
【单选题】Which statement about the following code block is right?deff(x):a=7print(a+x)a=5f(3)print(a)
A.
The output is 10 and 7.
B.
The output is 10 and 5.
C.
The output is 8 and 5.
D.
There will be an error.
查看完整题目与答案
【单选题】What will be displayed by the following code? x = 1 def f1(): global x x = x + 2 print(x) f1() print(x)
A.
1 3
B.
3 1
C.
The program has a runtime error because x is not defined.
D.
1 1
E.
3 3
查看完整题目与答案
【单选题】What will be displayed by the following code? x = 1 def f1(): y = x + 2 print(y) f1() print(x)
A.
1 3
B.
3 1
C.
The program has a runtime error because x is not defined.
D.
1 1
E.
3 3
查看完整题目与答案
【单选题】What will be displayed by the following code? def f1(x = 1 , y = 2 ): x = x + y y += 1 print(x, y) f1( 2 , 1 )
A.
1 3
B.
2 3
C.
The program has a runtime error because x and y are not defined.
D.
3 2
E.
3 3
查看完整题目与答案
【单选题】What will be displayed by the following code? def f1(x = 1 , y = 2 ): return x + y, x - y x, y = f1(y = 2 , x = 1 ) print(x, y)
A.
1 3
B.
3 1
C.
The program has a runtime error because the function returns the multiple values
D.
3 -1
E.
-1 3
查看完整题目与答案
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