热工仪表检修(初级)模拟试卷10(无答案).doc

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无答案)一、单项选择题下列各题的备选答案中,只有一个是符合题意的。1 有一精度等级为 05 的测温仪表,测量范围为 400600,该表的允许基本误差为( )。(A)3(B) 2(C) 1(D)32 若一普通工业热电阻(固定螺纹),其插入深度为 300mm,则其全长为( )。(A)150mm(B) 300mm(C) 450mm(D)500mm3 差压变送器零点迁移后,其输出特性是( )。(A)斜率不变,量程范围改变(B)斜率改变,量程范围不变(C)斜率和量程范围都改变(D)斜率和量程范围都不变4 铜电阻 Cu50 和 Cu100 同时测同一点温,那么若 Cu50 的阻值为 R,则 Cu100 的阻值为( ) 。(A)14R(B) 12R(C) R(D)2R5 按压力表检定规程规定,用来测量特殊介质的压力表的表壳、衬圈或表盘上应涂颜色标记,氧气压力表应涂有( )的“ 禁油”字样。(A)天蓝色(B)深绿色(C)黄色(D)白色6 如图所示,比较 A 表与 B 表的指示( )。(A)A 表指示值B 表指示值(B) A 表指示值=B 表指示值(C) A 表指示值=81936kgm 3,流束膨胀系数=l,试验算此孔板孔径是否正确。28 画出补偿导线原理图。29 如何调整弹簧管式压力表的非线性误差?30 班组的质量管理工作主要应搞好哪些方面?

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