Which statement about the hospital space on a cargo ship is TRUE（）. ["The hospital may be used for disciplinary confinement if it is not being used for treatment","The hospital space must have both a bathtub and shower","A hospital is required on all vessels with a crew of 12 or more if it makes overnight voyages","If a ship has a crew of forty-five who do not have their own room，the hospital must have four berth"]
活动目录的更新不包括（）。 ["添加","删除","复制","移动"]
压缩机的出口气温过高是什么原因？
磁盘或文件夹里事务日志保留空间为（）MB。 ["40","20","10","30"]
绝热层、防潮层、保护层的计算单位各是什么？
泡沫石棉毡指的是什么？其特点有哪些？
