單項(xiàng)選擇題

When required to work where there may be explosive gases, you should use tools which are （）

A.approved by the Coast Guard
B.high carbon steel
C.fixed with a ferrous cover
D.nonsparking

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Prior to entering a cargo pump room, you should ensure that （）.

A.the forced ventilating system is operating
B.the cargo pumps are secured
C.no monocarbon gases are present
D.the oily water separator is de-energized

單項(xiàng)選擇題

Personnel who are moving or handling material aboard ship should NOT follow which of the listed practices?（）

A.signaling that all personnel are clear before lifting or lowering material
B.Examining material for sharp edges or protruding points before handling
C.Closing, tagging, or securing valves that permit entrance of steam, water, or air into a fitting or other equipment
D.Throwing materials from high places to the deck