A.has left hand twist
B.has inside threads on both ends
C.has outside threads on both ends
D.takes two men to operate
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A.Static electricity
B.An open running electric motor
C.Loose wiring
D.Explosion proof lights
A.Stores such as line，rags，mattresses，linens，etc. must be treated to be fire retardant
B.Stores certified for use on uninspected vessels may be identified by the certification number used by Underwriter's Laboratories
C.A portable container of a flammable liquid used as fuel for portable auxiliary equipment must be stowed in a paint locker or at a designated open location
D.Acetylene may be in a ship's storeroom in quantities not exceeding 6000 cubic feet
A.Up to five gallons of a flammable liquid may be stowed in the engine room
B.All stores of line，rags，linens and other similar type stores must be certified by UL as being fire retardant
C.Cylinders containing compressed gasses must be constructed and tested in accordance with the Bureau of Standards
D.All distress flares when received must be stored in the portable magazine chest
最新試題
Your vessel is at a dock taking bunkers through a pipe laid down on the dock. If oil begins to flow out of a tank vent，what should you do FIRST?（）
You are ordering ship’s stores. Which statement is TRUE?（）
Kort nozzles are installed around the propellers of some vessels to（）.
A stay is（）.
Which is a part of a vessel’s standing rigging（）.
A well in the uppermost deck of a shelter deck vessel which has only a temporary means of closing for the purpose of gaining an exemption from tonnage measurement is called a（n）（）.
Deadweight，which is the cargo carrying capacity of a vessel in tons，is determined by（）.
What is NOT a function of the steam drum of a marine water-tube boiler（）.
（） is true.
Which statement is TRUE concerning gasoline vapors on board a vessel（）.