门尼粘度的应用。
参考答案:
门尼粘度高胶料不易混炼均匀及挤出加工,其分子量高、分布范围宽。门尼粘度低胶料易粘辊,其分子量低、分布范围窄。门尼粘度过低则硫化后制品抗拉强度低。
根据句意,从方框中选择合适的单词或短语,并用其适当形式完成句子。(5分)
小题1:Designs for the new gym will be in the library.
小题2:Jim ______________ his father. They are both clever and a bit quiet.
小题3:I was waiting for the school bus but it didn’t come. Then I ______________ it was Saturday.
小题4:Beijing is cold this time of year. You need to ______________ warm clothes if you go there.
小题5:Don’t forget to _______________ the door if you are the last one to leave the classroom.
重要电力设施中的主要建筑物以及国家生命线工程中的供电建筑物为( )。
A.一类建筑物
B.二类建筑物
C.三类建筑物
D.四类建筑物