Why should you wear a self-contained b

Why should you wear a self-contained breathing apparatus before entering the engine room after the fixed CO2 system has been discharged to combat a major fire?（）

ABecause carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiation
BBecause carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gas
CBecause carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gas
DThis action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless ga

参考答案

参考解析：

分类：船舶电气与船舶安全题库

During a period of whiteout，you should expect which of the following（）.ASnowfall or blowing snowBLack of ability to estimate distanceCHarsh contrast between sun-illuminated snow cover and the backgroundDHazy horizons with extensive mirage effect

2、Why should you back&

Why should you back up a duplicated tablespace after a TSPITR is complete？（）  ...

3、The bypass valve on a self-contained b

The bypass valve on a self-contained breathing device should be opened if（）.Ayou are entering a space containing poisonous vaporsByou are enter...

4、You should conduct a sector search und

You should conduct a sector search under which of the following circumstances（）.AThe search target is sighted and then lostBMore than one vess...

5、Why do you think they had not a backup

Why do you think they had not a backup computer?A Because it was easy down.B Because it was very expensive.C Because it was not advanced enough.D Because it was not as big as the main computer.

6、When underway in a channel,you should

When underway in a channel,you should keep to the（）.Amiddle of the channelBstarboard side of the channelCport side of the channelDside of the channel that has the widest tur

编辑推荐

2岁女孩，已确诊为重型β地中海贫血。下列治疗哪项不符合该患.....

征地补偿安置方案报经批准后，对补偿，安置标准有争议的如何.....

常规性物业管理招标的内容有如下哪些选项？ A.机构与日常运作.....

古罗马共和国时期，拥有最高军事权和行政权的是（）..

截止阀在使用中应注意什么？..

驼峰自动控制系统中在目的制动位，对车组的出口速度控制精度.....