单项选择题
A.dry chemical or foam B.foam or soda acid C.carbon dioxide or foam D.carbon dioxide or dry chemical
A.the hose could burst B.the nozzle end will whip about causing damage or injury C.water damage to vessel's cargo or structure D.personnel might trip over the hose
A.avoid kinking the hose B.avoid personal injury during connection C.make connecting easier D.prevent spray on electrical equipment