单项选择题
In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must（）.
A.actuate an alarm and open the engine room control valve
B.actuate an alarm and open the engine room CO2 releasing valve
C.open the engine room control valve and shut off engine room ventilation fans
D.open the engine room control valve and then the CO2 releasing valve
相关考题
-
单项选择题
To prevent the overflow of cargo tanks due to expansion, you should top off （）.
A.to the bottom of the expansion trunk
B.to within 1% to 3% of its capacity
C.to within 1% to 3% inches of its capacity
D.1 to 3 inches from top of the vent pipe -
单项选择题
After taking on fuel oil, the hoses should be disconnected and （）.
A.draped over the fantail to dry out
B.drained over the side and washed out
C.drained into the bilges and washed out
D.drained into buckets or fuel tanks -
单项选择题
Your ship has run aground and it is necessary to determine whether or not a compartment has floodedTherefore, you should （）.
A.open the watertight door and take a quick look
B.open the hatch dogs on the side away from the hinges
C.tap the bulkhead with a hammer to check for a water level
D.feel the bulkhead to see if it is hot
