参考答案:A
患者临床表现为严重贫血,伴有出血、感染和发热,血象表现为全血细胞减少,骨髓示增生低下,考虑再障。
As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: ()
(1) secure oil to fires
(2) increase feed pump pressure
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