If your propeller is racing in rough weather，you should（）. ["decrease your engine speed","ignore it","increase your engine speed","stop your engine until the rough weather passe"]
种子芽长控制在（）mm以内。播前须晾种，芽种湿度不宜过大，用手攥不沾手为宜。100%使用（）播种。
精细生产的内容包括（）。 ["与用户的关系","新产品开发","准时生产制","与供应商的关系"]
遇下列哪种情况，持枪人不可以开枪（）。 ["守库、押运人员所保卫的目标受到暴力侵害时","执行任务人员所佩带的武器，遭到暴力抢夺时","押运人员护送的现金、金银等财物的交通工具遭到不明身份的人员拦截时","执行任务的人员，人身遭到暴力侵害时"]
When separating the lube oil without additive, it is usually cleaned with hot water; the aim is to remove （） from it. ["acid","sludge","mechanical impurity","salinity"]
当气温稳定通过（）℃开始播种，播期一般在（）日～（）日。
