饭店电子商务体系包括（）。 ["饭店内联网","饭店外联网","饭店互联网","饭店局部网"]
绝热工程中：若采用钢带代替捆扎线时，总长度不变，重量应怎样换算？
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"]
泡沫石棉毡指的是什么？其特点有哪些？
压缩机起动时应注意哪些事项？
压缩机的出口气温过高是什么原因？
