1 competitors are required to hand in : j health certificate ( including electroencephalogram , electrocardiogram , pulse and blood pressure ) . the health certificate is valid within 20 days before the competition . k life insurance certificate 一)运动员在报到时须验交《体检证明》 (具体内容为脑电图、心电图、脉搏、血压，体检证明以赛前20天内方为有效)和《人身保险证明》 。
Thermal - plastic rubber of pu material is adopted as the surface material , which could be used within the scope of - 70 and + 150 , and is featured by non - skid , waterproof , desilting , and snow removal etc . , and thus could ensures clean indoor environment 面料采用热塑性橡胶pu材质，可在- 70至+ 150范围内方可使用，具有防滑、防水、除泥、除雪等性能，从而保证了室内环境清洁。
Cymes 1 - 2 in axil of leaves , rather short ; flowers pale green , 7 mm in diam . , 5 - merous ; sepals imbricate , inner two larger ; petals suborbicular , 3 mm long ; stamens without filaments ; pistil without style , stigma appressed , minutely 5 - lobed 聚伞花序1 - 2腋生，短小；花淡绿色，直径约7毫米； 5数；萼片覆瓦状排列，内方2片较大，边缘常有深色细浅齿；花瓣近圆形，长约3毫米；雄蕊无花丝；雌蕊无花柱，柱头平贴，微5裂。
