[单选] The（）is a series of trials done at sea to determine whether the ship has met the specifications of design, modification, or repair.

Windows具有多媒体功能，但不支持PlugandPlay（即插即用）。 LW6型断路器运行中出现油泵打压超时信号有哪些可能原因？ 地理标志，是指标示某商品来源于某地区，该商品的信誉、（）或其他特征，主要由该地区的自然因素或者人文因素所决定的标志。 品牌。 价格。 特定质量。 知名度。 识字能力的要求（） 汉语拼音能力。 辨别字形能力。 查字典能力。 自觉识字习惯。 A swift current occurring in a narrow passage connecting two large bodies of water which is produced by the continuously changing difference in height of tide at the two ends of the passage is called a(n)（）. hydraulic current。 rectilinear current。 rotary current。 harmonic current。 The（）is a series of trials done at sea to determine whether the ship has met the specifications of design, modification, or repair.