血中Hb,含量低于多少时,即使重度缺氧,亦发现发绀
A.<90g/L
B.<80g/L
C.<70g/L
D.<60g/L
E.<50g/L
参考答案:D
They won’t let their teacher _______ in that way.
A.to be treated
B.being treated
C.treated
D.be treated
生产经营单位不能用货币或者其他物品替代应当按规定配备的劳动防护用品。