Sufficient, but not less than two complete sets of safety equipment in addition to the firemen's outfits，each permitting personnel to enter and work in a ______ space, should be provided.
A.gas-filled
B.gas fire
C.dangerous
D.water-filled
正确答案是A
Sufficient, but not less than two complete sets of safety equipment in addition to the firemen's outfits，each permitting personnel to enter and work in a ______ space, should be provided.
A.gas-filled
B.gas fire
C.dangerous
D.water-filled
正确答案是A