單項(xiàng)選擇題進(jìn)行某一煤樣的揮發(fā)分測(cè)定時(shí),連續(xù)四次重復(fù)測(cè)定值為40.25%,41.30%,41.25%,40.35%,則該煤樣的揮發(fā)分值為()。 

A. 40.77
B. 40.78
C. 40.79
D. 40.97