单项选择题
A.sextant B.compass C.radar D.binoculars
Fire in the cabins. Close all fire doors and use the （）...
单项选择题Fire in the cabins. Close all fire doors and use the （）powder extinguisher.
A.dry B.wet C.foam D.portable
After joining the ship, the crew members should be （）wi...
单项选择题After joining the ship, the crew members should be （）with their emergency duties.
A.know B.familiarize C.familiar D.familiarity
Take off fore and aft boat （）.A.plugsB.nestsC.davitsD.c...
单项选择题Take off fore and aft boat （）.
A.plugs B.nests C.davits D.covers
