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电工测量指示仪表的有效测量范围,按刻度的形式分,均匀刻度者应为(),在零点附近刻度显著变窄者应为额定量程的()左右。
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考题
在下列数据:
①的有效数字是__________位,测量仪器的最小刻度是__________.
②的有效数字是__________位,测量仪器的最小刻度是__________.
③的有效数字是__________位,测量仪器的最小刻度是__________.
④的有效数字是__________位,测量仪器的最小刻度是__________.
考题
测量葡萄糖溶液旋光度时,零点校正是指: When measuring the optical rotation of glucose solution, zero correction refers toA.旋光计测量室放入蒸馏水试管,找出弱照度的均匀视场(零度视场),记下此时刻度盘的左右读数平均值,即零点校正值 Put tube contained distilled water into the polarimeter measuring chamber, find out the uniform field of view (zero degree field of view) with weak illumination, and record the average reading values from the left and right dial at this time, that is, the zero correction value#B.旋光计测量室不放任何试管,找出弱照度的均匀暗视场,记下此时刻度盘的左右读数平均值,即零点校正值。 Without any test tube in the polarimeter measuring chambe
考题
2、测量葡萄糖溶液旋光度时,零点校正是指: When measuring the optical rotation of glucose solution, zero correction refers toA.旋光计测量室放入蒸馏水试管,找出弱照度的均匀视场(零度视场),记下此时刻度盘的左右读数平均值,即零点校正值 Put tube contained distilled water into the polarimeter measuring chamber, find out the uniform field of view (zero degree field of view) with weak illumination, and record the average reading values from the left and right dial at this time, that is, the zero correction value#B.旋光计测量室不放任何试管,找出弱照度的均匀暗视场,记下此时刻度盘的左右读数平均值,即零点校正值。 Without any test tube in the polarimeter measuring chambe
考题
4、万用表刻度线分为均匀和非均匀两种,其中测量电流、电压量的刻度线为均匀刻度线。
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