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@Duanmengyan
10
points
Duan Mengyan
Last activity 4 years ago
Signed up 4 years ago
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1
Questions
184
Answers
3
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Most Voted
How can you use digital technology to track ethical supply chains?
DU
Duanmengyan
asked on 27 May 2020, 18:14
0
answers
/
7
votes /
573
views
What is the purpose of metal horizontal dropout plates on fixed gear bicycles?
DU
Duanmengyan
asked on 28 April 2020, 12:34
0
answers
/
3
votes /
648
views
Switches & Switchgears
Why must a double pole switch be used for a water heater?
DU
Duanmengyan
asked on 10 April 2020, 20:56
1
answers
/
5
votes /
823
views
Which bollywood song is your ringtone?
DU
Duanmengyan
asked on 17 June 2020, 17:18
0
answers
/
7
votes /
697
views
Why do smartphones have rounded corners?
DU
Duanmengyan
asked on 03 January 2020, 03:18
0
answers
/
4
votes /
554
views
Are there any OCR softwares for handwritten documents?
DU
Duanmengyan
asked on 25 June 2020, 18:56
0
answers
/
2
votes /
340
views
My desktop has 1X8GB DDR4 2400MHz RAM and four total RAM slots. What is the best way for me to upgrade to 16GB of RAM?
DU
Duanmengyan
asked on 24 June 2020, 21:51
0
answers
/
3
votes /
576
views
Why are there little black insects on my ceiling?
DU
Duanmengyan
asked on 18 June 2020, 05:40
0
answers
/
2
votes /
687
views
Is it against safety codes to have a main breaker circuit box in the bedroom?
DU
Duanmengyan
asked on 22 June 2020, 13:12
0
answers
/
2
votes /
795
views
What are the best microphones for an iPad?
DU
Duanmengyan
asked on 08 February 2020, 10:47
0
answers
/
0
votes /
631
views
How many test conduct in DC motor?
DU
Duanmengyan
asked on 02 June 2020, 09:15
0
answers
/
0
votes /
416
views
Can I change the thickness of a winding wire from 0.71mm to 0.75mm on a single phase electric motor without encountering problems?
DU
Duanmengyan
asked on 14 July 2020, 02:46
0
answers
/
3
votes /
455
views
My laptop does not charging and open. Why?
DU
Duanmengyan
asked on 25 June 2020, 08:37
0
answers
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2
votes /
489
views
Is the reverse recovery charge bigger or smaller for high voltage transistors, and why?
DU
Duanmengyan
asked on 06 July 2020, 12:32
0
answers
/
6
votes /
566
views
How do holes conduct electricity in a p-type semiconductor?
DU
Duanmengyan
asked on 13 July 2020, 04:38
0
answers
/
6
votes /
807
views
Are the Koch brothers also financing the Democrats?
DU
Duanmengyan
asked on 20 February 2020, 12:47
0
answers
/
8
votes /
866
views
How often should the air condition ducts in a central airconditioned house be professional cleaned?
DU
Duanmengyan
asked on 01 May 2020, 07:14
0
answers
/
0
votes /
702
views
What are the best wholesale markets of solar panels in India?
DU
Duanmengyan
asked on 07 February 2020, 01:36
0
answers
/
7
votes /
742
views
What are the C, O, and N parameters of a common mode choke?
DU
Duanmengyan
asked on 10 June 2020, 03:10
0
answers
/
5
votes /
325
views
What is the alternative to LED notifications on an Android smartphone?
DU
Duanmengyan
asked on 21 June 2020, 07:46
0
answers
/
1
votes /
504
views
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