A.The unit is working properly
B.The face mask is not sealed properly
C.The air bottle needs to be refilled
D.The air supply hose has a leak
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A.corrosive
B.class B poison
C.oxidizer
D.explosive
A.The cargo's temperature is colder than the dew point of the air in the space
B.The cargo's temperature is warmer than the dew point of the air in the space
C.The dew point of the air in the space is lower than the dew point of the outside air
D.All of the above
A.Cement
B.Chinaware
C.Fish meal
D.Steel products
最新試題
An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.
An all-round flashing yellow light may be exhibited by a(n)（）.
An “on-load” release system on a survival craft means the cable can be released（）.
An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show? （）
All of the following are part of the fire triangle EXCEPT（）.
All towing vessels of 26 feet or longer while navigating are required to carry which item? （）
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes? （）
In handling break bulk hazardous materials，it is forbidden to use（）.
All of the following information concerning lighted aids to navigation may be read directly from the Light List EXCEPT the（）.
All OSV personnel should be familiar with survival craft（）.