题目内容

消防泵的吸水深度是指泵轴中心线距水源（水池）液面的垂直高度。

A. 正确
B. 错误

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Fire protection regulations for towing vessels require training in all of the following，EXCEPT（）.

A. putting on a fireman's outfit，if the vessel is so equipped
B. donning a self-contained breathing apparatus，if the vessel is so equipped
C. activating the general alarm and reporting inoperative alarm systems and fire-detection systems
D. refilling and servicing all expended fire extinguishing equipment

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