题目内容
(请给出正确答案)
[主观题]
How long warning must be provided by the CO2 warning Mann before CO2 is discharged into a
space _____.
A.5 seconds
B.10 seconds
C.15 seconds
D.20 seconds
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A.5 seconds
B.10 seconds
C.15 seconds
D.20 seconds
第1题
A.the engine to run after the fuel has been secured
B.the engine to over-speed
C.a fire
D.all of the above
第2题
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
第3题
A.tape face
B.tapered face
C.surface
D.thinner face
第4题
A.increases the density of the air
B.decrease the density of the air
C.increases the specific heat of the air
D.decreases the specific heat of the exhaust
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