單項(xiàng)選擇題據(jù)GB/T14685-2011,在針片狀含量實(shí)驗(yàn)中,4.75~9.50片狀規(guī)準(zhǔn)儀相對(duì)應(yīng)孔寬是()

A.2.3
B.2.5
C.1.8
D.2.8


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