单项选择题
All portable fine extinguishers must be capable of being（）.
A.carried by hand to a fire B.carried or rolled to a fire C.recharged in the field D.used on class B fires
单项选择题 All the cargo holds must be（）cleaned out（）meet the requirement of the cargo surveyor.
单项选择题 All the holds to be familiar with the survival craft’s（）.
单项选择题 All vessel personnel should be familiar with the survival crafe’s（）.
