部队室内保持整齐清洁,空气新鲜,无(),无污迹,无烟头,无积尘。
A、蜘蛛网
B、水渍
C、异味
D、垃圾
参考答案:B
Daniel goes to the Reading Club _______ every Wednesday afternoon and goes to the Computer
Club _______ Fridays. [ ]
A. in; on
B. on; on
C. at; in
D. /;on
内框纸主要用于翻盖硬盒成形后盒盖的()。