A space should be ventilated when（）.

1、The cargo，when（），should be completely

The cargo，when（），should be completely covered with plastic.AstowBstowingCstowedDbe stowed

2、Which operation should be done when la

Which operation should be done when launching an inflatable liferaft by hand?（）AOpen the liferaft casingBTurn the valve on the CO2 cylinder to...

3、When should a fire be ventilated?（）

When should a fire be ventilated?（）AWhen attacking the fire directlyBWhen using a steam smothering systemCWhen using the fixed CO2 systemDAll of the above

4、When possible，what should be the FIRST

When possible，what should be the FIRST step in combating a fire on deck resulting from a cargo overflow or a leaking cargo line?（）ABlanket ...

5、A compressor should never be stopped （

A compressor should never be stopped （）.Awithout first cooling itBwithout first heating itCwithout first unloading itDwithout first loading it

6、Which precaution should be taken when

Which precaution should be taken when testing a line throwing gun?（）ANever remove the line from the rocketBFire it at an angle of approximately 90 degrees to the horizonCWear asbestos glovesDAll of the above