籽棉公定衣分率是指：从籽棉上轧出的皮棉（）占相应籽棉重量的百分率。
参考答案：公定重量
— Look! There ________!
— Oh;yes,there __________ ! [ ]
A. comes Tom;comes he
B. Tom comes;he comes
C. Tom comes;comes he
D. comes Tom; he comes
何为盐引？
