单项选择题

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

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单项选择题

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

单项选择题

Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）

A.The expansion tank should be topped off
B.The thermostatic water regulating valves should be manually opened
C.The fuel filters should be changed
D.The engine should be turned over slowly with the indicator cocks open

单项选择题

The order “（） ” means “Maximum maneuvering engine revolution for ahead propulsion”.

A.Full Ahead
B.Half Ahead
C.Full Astern
D.Half Astern