对于乙苯单元的高沸物组成要求控制二乙苯的含量()
A.≤0.5%(wt)
B.≤1%(wt)
C.≯1%(wt)
D.≯1.5%(wt)
参考答案:A
—I dislike shopping online, I prefer to actually see and touch what I`m buying before I pay for it, especially for clothes and shoes
—That’s right.___________.
A.Seeing is believing
B.Clothes do not make the man
C.The first step is always the hardest
D.You are never too old to learn
以下有关申请权或专利权变更生效日期的哪些说法是正确的
A.申请权变更自提出著录事项变更申报书之日起生效
B.专利权变更自当事人收到专利局发出的变更手续合格通知书之日起生效
C.申请权变更自专利局发出变更手续合格通知书之日起生效
D.专利权变更自专利局对于变更事项作出公告之日起生效