题目内容

某加热系统正常运行时，考虑了安全裕量后需排出凝结水量50kg/h。现将凝结水直接送到回收系统，由于系统的背压影响，疏水器的排水量降低了38%。问选择疏水器时，疏水器的最大排水量(kg/h)应是下列哪个数值

A. 69.0
B. 80.6
C. 31.0
D. 60.5

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