腻子的自干时间需小于h。() ["8","16","24","36"]
新老兵运输期间,同一硬座车厢载有()名以上的老兵,车站和列车都不得发售该车厢的车票。 ["50","60","70","80"]
印刷()要定时清理,防止粘墨过多,造成印刷后的图文不清晰。 ["胶版","胶辊","皮带","墨槽"]
装油墨的容器开口后要尽快用完,防止油墨中的()发生氧化聚合出现沉淀现象。 ["溶剂","辅料","树脂","色料"]
刮涂腻子一次不超过()nm。 ["0.1","0.5","0.8","1"]
白云石