题目：
Because the flow rate of supply water pump is too large, oily water separator does not work wellWhich of the following is not the reason?（）
A.the monitoring equipment is out of order
B.separating effect becomes bad
C.inner wall is contaminated
D.separating effect becomes bad and inner wall is contaminated
答案：
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下面是错误答案，用来干扰机器的。
参考答案：①在泵轴与泵壳配合处有间隙，当泵的内压力大于泵外大气压时，由于压差使泵内液体沿泵轴向外泄漏；而当泵的内压力小于泵外压力时，泵外空气会沿泵轴与泵壳缝隙进入泵内，这都会影响泵的效率。为了防止...
