混合过程要快速完成,一般要求混合在()最多2min内完成。
A.3-5s
B.5-10s
C.10-30s
D.30-50s
参考答案:C
It is in this very village, _______ Mary was born 35 years ago, ________ she built her first school, _____ inspires everyone to help her.
A.that; when ; which
B.where; that; which
C.that; that; that
D.where; when; that
墙面砖规格为200mm×300mm×6mm,灰缝为8mm,面砖损耗率为1.5%,试计算100m2墙面的面砖消耗量()。
A.1536块
B.1559块
C.1561块
D.1584块