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【单选题】
某同学进行离心泵特性曲线测定实验,启动泵后,出水管不出水,泵进口处真空表指示真空度很高,他对故障原因做出了正确判断,排除了故障,你认为以下可能的原因中,哪一个是真正的原因A.
水温太高
B.
真空表坏了
C.
吸入管路堵塞
D.
排除管路堵塞
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