[单选] 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?（）

下列票据状态不可进行银行汇票撤销的是（）。 已签发。 已解付。 已退票。 已挂失。 下图表示细胞对大分子物质通过“囊泡运输”的过程。下列与此有关的叙述正确的是（） a要有细胞表面识别和内部供能才可能完成，而b不需要。 a、b体现了生物膜结构和功能相统一。 该图解可以证明生物膜具有一定的流动性。 b与a分别是所有细胞排泄废物和摄取养分的基本方式。 知识产权指的是（）。 商标权。 专利权。 著作权。 以上都是。 液体贮槽在贮存、运输过程中应注意什么问题？ Excel2003中，PMT函数基于固定利率及等额分期付款方式，返回贷款的每期付款额。 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?（）