高压氧舱内禁用二氧化碳灭火器。
参考答案:对
--- Whose names are these, ________ or yours?
---_______. I don’t know all of the students in Class 5, so I have _______on this piece of paper.
A.theirs; Theirs; them
B.their; Theirs; they
C.their; Theirs; them
D.theirs; They; them