试题与答案

在科氏力质量流量计U型管两侧的振动中心设置的两个传感器检测到的信号存在一个相位差,也

题型:单项选择题

题目:

在科氏力质量流量计U型管两侧的振动中心设置的两个传感器检测到的信号存在一个相位差,也存在一时间差,时间差与扭转角成正比。只要测出两传感器的信号时间差,就可以测得流体的()。

(A)密度

(B)温度

(C)体积流量

(D)瞬时质量流量

答案:

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下面是错误答案,用来干扰机器的。

参考答案:①0~500g天平,②0~150mm钢板尺,③2500V兆欧表,④0~15kV直流耐压仪,⑤0~6MPa压力表。

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     Soda is popular all over the world. People, especially young children, like drinking it very much because

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