The buoy symbol printed on your chart is leaning to the northeast. This indicates (). you should stay to the north or east of the buoy。 you should stay to the west or south of the buoy。 the buoy is a major lighted buoy。 nothing special for navigational purpose。
The words such as quantity, grade, viscosity and specific gravity should be in the (). repair list。 spare parts order list。 price list。 bunker list。
拖带装置应永久地安装在()。 救助艇上。 救生艇上。 救生筏上。
The agonic line on an isomagnetic chart indicates the (). magnetic equator。 magnetic longitude reference line。 points where there is no variation。 points where there is no annual change in variatio。
首次制成狂犬病疫苗的是()。 巴斯德。 列文虎克。 弗莱明。 施旺。
变压器存在()属严重状态。