单项选择题
A．certificate B．currency C．container D．catalogue
A．jumbo bag；plasti woven bag；plastic bag B．jumbo bag；plastic bag；plastic woven bag C．P1astic bag；jumbo bag；plastic woven bag D．plastic woven bag；plastic bag；jumbo bag
A．商业鉴定 B．商业检验 C．商业回潮率 D．商业干湿度