系统是由若干要素以一定（）联结构成的具有某种（）的有机整体。
纯气井通常使用（）在井口直接测量，然后换算成井底压力。 压力表。 压力计。 活塞式压力计。 液面监测仪。
通风空调工程按不同的使用场合和生产工艺要求，大致可分为哪几部分？
所谓立体策划是指一种带有（）和（）的策划方案。
The liability（）freight reserved in the bill of lading is primarily on the shipper of the goods，unless he was merely acting as agent and made this clear at the time. for paying。 to pay。 paying。 for being paid。
The master（）in delivering the goods to the consignee named in the bill of lading on production thereof，or to the first person who presents a properly indorsed bill of lading.
