多项选择题
A.We are dealing in electronics B.We specialize in stylish men's garments C.Our company is pioneering in the field of books D.Our company is among the leading manufacturers and suppliers in the field of female fashion apparel
A.built B.discovered C.established D.opened
A.易燃易爆化学品 B.放射性物质 C.剧毒化学品 D.有毒化学品