混凝土和砂浆用再生细骨料根据MB值<1.40或合格的试验结果,I类再生细骨料的微粉含量技术要求是()?
A、<1.0%
B、<3.0%
C、<5.0%
D、<7.0%
参考答案:C
下列常用词语中字音有错误的一组是
A.赔偿cháng徜徉cháng提防dī瓜熟蒂落dì
B.缔造dì掂掇díānduo玷污diàn佝偻jùLou
C.勾当goo骨朵gū骨气gǔ蛊惑gǔ
D.蛮横hèng飞来横祸hèng发横财hèng一哄而散hòng
Look at my stamps.
They are beautiful! You’ve got a wonderful_________.
A.instruction
B.description
C.collection
D.expression