单项选择题
A.Sound B.Ring C.Release D.B+C
The ship is （）(搁浅).A.strandB.strandingC.standD.standing
单项选择题The ship is （）(搁浅).
A.strand B.stranding C.stand D.standing
The air is （）(有毒的).A.humidB.dampC.toxicD.mould
单项选择题The air is （）(有毒的).
A.humid B.damp C.toxic D.mould
Close all fire doors and use the （）（干粉灭火器）.A. dry powde...
单项选择题Close all fire doors and use the （）（干粉灭火器）.
A. dry powder extinguisher B. foam extinguisher C. CO2 extinguisher D. portable extinguisher
