day for children and adolescents. Cardiovascular conditioning activities should be appropriate for the age, gender, and emotional status of the child. Examples of exercise that elevates the heart rate are bicycle riding, running, swimming, jumping rope, brisk walking, dancing, soccer, and basketball...
DescriptionofCommodities Salebystandard ISOstandard FAQ:FairAverageQuality GMQ:GoodMerchantableQuality ISO: 国际标准化组织(InternationalOrganizationforStandardization)简称ISO,是一个全球性的非政府组织,其成员由来自世界上100多个国家的国家标准化团体组成｡ISO的主要功能是为人们制订国际标准达成一致意见提供一种机制...