7. What location do oxygen and acetylene bottles be stored?
(A) In engine room.
(B) In accommodation.
(C) In machinery spaces.
(D) Outside accommodation, engine room and machinery spaces.
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統計: A(25), B(49), C(31), D(319), E(0) #1312386
統計: A(25), B(49), C(31), D(319), E(0) #1312386