其他条件均相同时,优先选用那种固液分离手段()
A.离心分离
B.过滤
C.沉降
D.超滤
参考答案:B
---- Water can dissolve almost anything and give nutrients to creatures.
---- Yes, and that’s one of its __________.
A.characters
B.properties
C.qualities
D.abilities
精装样式分为()
A.纸面精装、软面精装和护封精装
B.圆脊精装、方脊精装和平脊精装
C.全纸面精装、纸面布脊精装和全面料精装
D.硬面精装、布面精装和绸面精装