锅炉缺水是指锅炉水位低于最低水位表刻度线,在容水量较大的小型锅炉轻微缺时()。 ["应立即给锅炉上水","应停炉","应紧急停炉","可以不作处理"]
门式脚手架通道口高度不宜大于()个门架高度,宽度不宜大于()个门架跨距。 ["1;1","2;1","2;2","1;2"]
With respect to the flow of lubricating oil through a diesel engine, the lube oil coolers are located after filters in order to (). ["allow filtration of less viscous oil","decrease the pressure drop across the filter","improve overall filtration","all of the above"]
溶酶体的功能包括哪些?() ["降解由胞外环境进入胞内的物质","清除无用的生物大分子及衰老的细胞器","吞噬和自噬","胞吐"]
3/2断路器接线中当线路跳闸后为什么要求母线侧开关优先于中间断路器重合?如何实现?
一二期各采取什么手段保持高向加热的均匀?