国家规定重大伤亡事故是指一次死亡（）的安全事故。 ["1～2人","3（含3）～10人","10（含10）～30人","30（含30）～50人"]
农业生产有什么特点？
模板的拆除顺序一般为（）。 ["先支先拆，后支后拆","后支先拆，先支后拆","先拆非承重部分，后拆承重部分","先拆承重部分，后拆非承重部分","先下后上，先内后外"]
Pinching of the cargo hose between the vessel and the dock should be prevented by（）. ["adjusting the hose supports","laying out an excess length of hose on deck","tying off the topping lifts and runners to winch heads","All of the above"]
种质资源
血清脂质测定的项目主要有（）、（）。
