B.) field
C.) layer
D.) shell
[单选题]A.) environmentB.) civilizationC.) communityD.) culture
[名词解释] Field Test
[单选题]SHEL模型的中心是()A . 软件B . 硬件C . 环境D . 生命件/人
[单选题]Environment makes __________we are. If we damage the environment, we′ ll en
[单选题]The field coils _____and the armature _____. This is in fact the arrangement adopted for large, heavy duty alternators.A.are stationary / rotatesB.are stationary /is stationaryC.rotate / is stationaryD.rotate / rotates
[名词解释] 规格框(Field)
[名词解释] 冰原(ice field)
[单选题]SHEL模型里面的“S”代表().A . 软件B . 硬件C . 环境D . 生命件/人