航海英語(yǔ)航海圖書資料單項(xiàng)選擇題每日一練(2018.10.16)

單項(xiàng)選擇題
A life preserver or buoyant work vest is required to be worn on a ship when a person is （）.
A.working on the rig floor
B.working over water
C.working on the pipe racks
D.operating line throwing equipment
單項(xiàng)選擇題
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.
A.Mention signal stations and ice，storm，traffic and port signals
B.Give the international numbers of lights
C.Give the correction of the lights and fog signals
D.Give the information on the lights and fog signals
單項(xiàng)選擇題
Section V of the ADMIRALTY NOTICES TO MARINERS is（）.
A.Reprints of Radio Navigational Warnings
B.Amendments to Admiralty Sailing Directions
C.Amendments to Admiralty Lists of Lights and Fog Signals
D.Amendments to Admiralty List of Radio Signals
單項(xiàng)選擇題
Temperature and moisture characteristics are modified in a warm or cold air mass due to （）.
A.pressure changes in the air mass
B.movement of the air mass
C.the heterogeneous nature of the air mass
D.upper level atmospheric changes
單項(xiàng)選擇題
Steam smoke will occur when（）.
A.Extremely cold air from shore passes over warmer water
B.Warm dry air from shore passes over cooler water
C.Cold ocean water evaporates into warm air
D.Cool rain passes through a warm air mass