意识障碍是指()
A.昏迷状态
B.昏睡状态
C.兴高采烈
D.哭笑无常
E.影响大脑功能活动的疾病引起的意识改变
参考答案:E
化学交联一般通过缩合剂将胶乳上羟基与被交联物上氨基缩合在一起,常用的缩合剂是()
A.聚苯乙烯
B.SPA
C.戊二醛
D.碳化二亚胺
E.丙酮醛
Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
A.hundreds of
B.two hundreds of
C.two hundreds
D. hundreds