6岁小儿中度贫血的诊断指标是()
A.Hb>120g/L
B.Hb<120g/L
C.Hb<90g/L
D.Hb<60g/L
E.Hb<30g/L
参考答案:D
500千伏及以上电压等级SF6断路器或220千伏及以上电压等级GIS可根据需要配置SF6气体压力和()在线监测装置。
______ has been reported in the newspaper, they were about to have peace talks between the two
countries when an accident happened.[ ]
A.It
B.As
C.That
D.What