All Answers (8) 1  This is nice information from wikipedia visit. 2  I guess if you assume the DNA is at rest with an average rise of 3.4 A per base pair, then the length of chr1 would be 3.4A * 249*10^6, i.e. 847*10^6A, i.e. ~85 mm, or 8.5 cm.
Boiler sizing includes two things: 1  The heating and hot water capabilities of the boiler. 2  The physical size of your boiler and whether it will fit in the space you have it destined for.
Ask what will be included in the boiler service and make a note. Watch the engineer and use our checklist to ensure that they cover the basics. A good boiler service should last at least 30 minutes.If itâs shorter than this, ask why. Finally, ask for a written report and check it is accurately filled out. If you have any concerns, contact the Gas Safe Register.sk what will be included in the boiler service and make a note. Watch the engineer and use our checklist to ensure that they cover the basics. A good boiler service should last at least 30 minutes.