（）means a document which evidences a contract of carriage by sea and the taking over or loading of the goods by the carrier，and by which the carrier under takes to deliver the goods against surround of the document. Bill of lading。 Bill of exchange。 Mate's receipt。 Manifest。
The static suction lift of a pump is the difference in elevation between the （）. centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump。 centerline of the pump and the suction liquid level when the source of liquid is above the pump。 centerline of the pump and the level of the discharge liquid。 liquid levels of the suction and discharge。
防火墙可以阻止感染了病毒的软件或文件的传输。
浪漫主义文学流派的代表人物是（） 鲁迅。 郭沫若。 陈独秀。 钱玄同。
生物进化是指什么？（） 生物越来越适应环境。 生物的遗传物质越来越不一样。 生物的个体数越来越多。 生物的环境的破坏越来越大。
油井基本资料有射开层位、（）、上下油层与邻井的连通情况、储量、层系划分、井下技术状况等。
