相关题目
60. *What is used to control oil slick in the picture?
59. *What are the two vessels cleaning on sea surface?
58. *() is required by the Medical First Aid Guide ( ) for use in accidents involving dangerous gases where a portable oxygen apparatus is not available.
57. *EPIRB shall generally be installed ().
56. *() is the ladder provided at survival craft embarkation stations to permit safe access to survival craft after launching.
55. *The appliance shall be so constructed that the end from which the rocket is () can be positively identified by day or night.
54. *Every line-throwing appliance shall be capable of throwing a line of no less than 4 mm in diameter for a distance of () in calm weather.
53. *Each () needs to be regularly checked and maintained properly in order to be ready for use all the time.
52. () is a protective suit which reduces the body heat loss of a person wearing it in cold water.
51. *Every lifebuoy shall be of a () colour.
