单项选择题
If，during helicopter refueling operations，fuel is spilled on clothing，the person should first（）.
A.see the medic immediately B.spray himself with foam or CO2 C.complete his task and then see the medic D.remove the clothing and wash
单项选择题 Each part of the fire-main system located on an exposed deck must be（）.
单项选择题 Each hose in the fuel transfer system for helicopter refueling must meet the standards of the（）.
单项选择题 Each hand portable fire extinguisher must be marked with（）.
