【单选题】以下描述正确的一项是 [ ]
A.
植物组织培养是指离体的植物器官或细胞培养成愈伤组织
B.
从免疫学的应用来看,给儿童服用小儿麻痹糖丸属于免疫预防
D.
动物细胞融合技术的最重要的用途是培养具双亲优良性状的经济动物
【简答题】The should be paid to the ‘group’ effort rather than the ‘self’ effort . A . effort B . attention C . energy D . strength
【单选题】利用薄荷的茎段进行离体培养,属于以下的哪种组织培养方式。
【单选题】Getting rid of bad habits is _____ forming a good one. [ ]
【判断题】28 判断 (2 分 ) 所谓混合规则,是将状态方程中的常数项项表示为混合物组成和纯物质参数项的函数关系。
【单选题】Coordination Effort is necessary to coordinate the allocation of attention between ______________.
A.
Input Effort, Memory Effort and Output Effort
B.
Input Effort, Transformation Effort and Output Effort
C.
Analyzing Effort, Memory Effort and Production Effort
D.
Listening Effort, Memory Effort and Production Effort
【单选题】Getting rid of bad habit is________forming a good one. [ ]
【简答题】He thought that ________. A) the effort doing the job was not worth B) the effort was not worth in doing the job C) it was not worth the effort doing the job D) it was not worth the effort by doing th...