WE、CC分别代表导线的哪种线路敷设部位？
《八十天环游地球》中80天后福格回到起始点自认为迟到了多少时间？（） A.5分钟。 B.一天。 C.两天。 D.三天。
可以下达操作任务单的人员有（）。 值长。 运行班长。 机组长。 发电部主任。
认证机构不得与认证委托人存在资产、管理方面的利益关系。（）
It becomes a common practice to insert a clause in the bills of lading for vessels trading to and from the United States，expressly declaring（）the Shipowner could recover in general average in the event of negligence，provided that due diligence has been exercised to make the ship in all respects seaworthy. where。 which。 that。 whether。
The heat required to change a substance from a solid to a liquid while at its freezing temperature, is known as the latent heat of （）.
