A. carry at least two injured persons B. float for at least two hours C. be used on the types of helicopters serving the unit D. All of the above
A. 正确 B. 错误
A. 使用前应检查有无漏气或裂口等缺陷 B. 戴绝缘手套时,应将外衣袖口放入手套的伸长部分 C. 绝缘手套定期试验周期为每年一次 D. 绝缘手套用后应擦拭晾干,撒上一些滑石粉以免粘连,并应放在通风、阴凉的柜子里