烧结生产用原料可分为含铁料、()、燃料三大类。燃料挥发份超过()对抽风机的除尘器不利。
参考答案:熔剂;10%
在动作电位的形成过程中,膜内带正电膜外带负电为()
A.除极
B.复极化
C.反极化
D.极化状态
E.超极化
In order to____ a good knowledge of French, he gave up his favorite job and set off for France.
A.acquire
B.adapt
C.acknowledge
D.accelerate