1 protective clothing against liquid and gaseous chemicals , aerosols and solid particles - performance requirements for ventilated and non - ventilated " gas - tight " type 1 and " non - gas - tight " type 2 chemical protective suits 耐液体和气体药液气溶胶和固体粒子腐蚀的防护服.通风和不通风的气体密封
He remembered a lodging - house where there were little , close rooms , with gas - jets in them , almost pre - arranged , he thought , for what he wanted to do , which rented for fifteen cents 他想起了一家寄宿处，那里有装着煤气喷嘴的不通风的小房间，他觉得像是为了他想做的事而预先安排好的，房钱是一天毛分钱。
