What shall be conducted during a fire and boat drill?（）<br>A:All watertight doors which are in use while the vessel is underway shall be operated<br>B:All lifeboat equipment shall be examined<br>C:Fire pumps shall be started and all exterior outlets opened<br>D:All of the above

What shall be conducted during a fire and boat drill?（）
A:All watertight doors which are in use while the vessel is underway shall be operated
B:All lifeboat equipment shall be examined
C:Fire pumps shall be started and all exterior outlets opened
D:All of the above

出自：海船船员证

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