單項(xiàng)選擇題

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

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單項(xiàng)選擇題

All the cargo holds must be（）cleaned out（）meet the requirement of the cargo surveyor.

A.such/that
B.so/that
C.such/to
D.so/as to

單項(xiàng)選擇題

All the holds to be familiar with the survival craft’s（）.

A.cleanly/during
B.clear/meawhile
C.clean/between
D.clean/prior to