知识产权指的是（）。 ["商标权","专利权","著作权","以上都是"]
自喷井检查更换油嘴操作中，用套筒扳手卸油嘴，手要端平，边卸边晃，防止油嘴脱落，取出油嘴。
Cocks and valves control or interrupt flow, and have internal passages arranged so that they can be restricted or closed: in cocks, by rotating the plug, and in valves, by lowering, raising or rotating a disc in relation to a seating surfaceAccording to the above sentence, which of the following statements is not true?（） ["Flows of fluids can be restricted by both cocks and valves","There are seats in the internal passages of valves","A disc of valve only moves up and down","We can infer that there is a bore in cock ping"]
以下哪个不是项目管理体系的目标？（） ["简单","透明","高效","成本低"]
我们现在讲的文明形态包括（）。 ["物质文明","精神文明","政治文明","社会文明","生态文明"]
液体贮槽在贮存、运输过程中应注意什么问题？
