从GB12904《商品条码》国家标准中我们可以看出,不同放大系数的条码,它们的尺寸误差要求也不同。放大系数越,尺寸误差要求越严()
A.小
B.大
参考答案:A
Scarcely _____ raining _____ the PLA fighters started on their way again.
A.it had stopped...before
B.it had stopped...then
C.had it stopped...than
D.had it stopped...when
反映油脂新鲜程度的指标是()。