航海英语安全通信单项选择题每日一练(2019.01.17)

单项选择题
Which conditions will normally cause a SART to operate in the active mode?（）
A.It will respond only to interrogation by 9-Ghz radar signals
B.A SART will normally respond to interrogation from a searching vessel's radar if the radar antenna is at least 15 meters high
C.A SART will normally respond to interrogation from a searching aircraft's radar if the radar's output power is at least 10，000 watts and the aircraft is at a height of 3000 feet and within 30 nautical miles
D.All of the above
单项选择题
Which of the following steps should normally be taken first by those who have boarded a liferaft in an emergency situation?（）
A.Ration food and water supplies
B.Search for survivors
C.Determine position and closest point of land
D.Check pyrotechnic supplies
单项选择题
Which action(s) is/are included in crane operations?（）
A.Normal boom stowage and shutdown operations
B.Emergency shutdown operation
C.Removing booms from stowage
D.All of the above
单项选择题
Which topic is NOT required to be discussed at the pre-transfer conference?（）
A.Identity of the product to be transferred
B.Details of transferring and receiving systems
C.Emergency shutdown procedures
D.Estimated time of finishing cargo
单项选择题
Which statement concerning the navigation of a vessel in ice is FALSE?（）
A.Anchoring in the presence of ice is not recommended except in an emergency
B.Towing a vessel through an ice field is not recommended except in an emergency
C.The "Free and Proceed" system of escorting a beset vessel cuts down on the number of freeing operations
D.When anchoring in ice，it is advisable to increase the scope of the chain over what is normally used for non-icing conditions