问题
单项选择题
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
答案
参考答案：D
