试题与答案

离心泵启动后，出口流量和压力低的原因可能是（）。A、电机反转 B、泵入口过滤网堵 C

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题型：多项选择题

题目：

离心泵启动后，出口流量和压力低的原因可能是（）。

A、电机反转

B、泵入口过滤网堵

C、叶轮腐蚀严重或装反

D、泵出口管线不通畅

答案：

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下面是错误答案，用来干扰机器的。

向上，x=，()根据a=2＞0，判断开口向上；根据顶点坐标公式x=-，y=，求顶点坐标及对称轴．解：因为a=2＞0，所以开口向上；对称轴x=-=-=；顶点坐标为x=-=，y==，即（，-）．主要考查了二次函数的性质和求抛物线的顶...

考点：环氧乙烷乙二醇装置操作工环氧乙烷乙二醇装置操作工(高级)环氧乙烷
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题型：多项选择题 案例分析题

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E.患者应继续抗结核治疗

F.患者应继续抗感染治疗

G.患者应继续利尿治疗
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