单选题按规定，测量管的内径应（）A小于32mm；B不得小于50mm；C为65mm；D不得小于32mm。
单选题
按规定，测量管的内径应（）
A
小于32mm；
B
不得小于50mm；
C
为65mm；
D
不得小于32mm。
参考解析
解析：
暂无解析
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