A fire in a ballast pumproom can be brought under control with minimal impact on stability by（）.
1、Before welding can be done in a tank t
Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.Athe CustomsBthe Register Bureau of ShippingCthe Shipyard Fire DepartmentDa certified gas chemist
2、A class "D" fire would be considered a
A class "D" fire would be considered as burning （）.AwoodBoilCelectrical equipmentDmagnesium
3、Ballast water can only be（）in cargo ta
Ballast water can only be（）in cargo tanks in exceptional cases where the particular character of the operation of an oil tanker renders it n...
4、Before welding can be done in a tank t
Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.Athe customsBthe Register Bureau of shippingCthe shipyard fire departmentDa certified gas chemist
5、A fire in a pile of dunnage would be c
A fire in a pile of dunnage would be classified as a （）.Aclass ABclass BCclass CDclass D
6、Radiation can spread a fire by （）.
Radiation can spread a fire by （）.Atransmitting the heat of a fire through the ship s metalBburning liquids flowing into another spaceCheated gases flowing through ventilation systemsDthe transfer of heat across an unobstructed space