用内径百分表测量时,当表针按顺时针方向旋转而未达到“零”点时的读数是负值。() 此题为判断题(对,错)。

用内径百分表测量时,当表针按顺时针方向旋转而未达到“零”点时的读数是负值。()

此题为判断题(对,错)。


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内径百分表测量时,要特别注意偏差数值的正、负符号,当表针按顺时针方向未达到零点,此时相对于零位的偏差是 值。A.正B.负C.可能正,也可能负D.不好判断