Once every 6-8 months.
Electrical equipment should be tested every 6 months like your smoke detectors and your furnace . Electrical fires are the 3rd leading cause of fires in Canada, so test ,test test.
Monthly.
once a month
10 years
A crawl space is an area of limited height under a floor or roof; it often gives access to plumbing and electrical installation.
at least annually
every 12-18 months
The National Electrical Code: http://www.nfpa.org/aboutthecodes/AboutTheCodes.asp?DocNum=70&cookie%5Ftest=1
You local Governement Aviation Authority should have the standard required
It would all depend, if you wake up and she's a minger straight away mate
fertility clinic... often hospitals can redirect you to some places like this or they will have one inside the building
Experimentation