A.Stａndards Australia On-line http：//www.stａndards.com.au
B.IEEE Stａndards http：//stａndards.ieee.org
C.International Labour Organization http：//www.ilo.org
D.The National Stａndards System Network http：//www.nssn.org
E.Stａndards Council of Canada http：//www.scc.ca
F.National New Zealａnd http：//www.stａndards co.nz