了解用户需求和确定系统逻辑模型,形成系统分析报告是()。
A.数据分析的主要任务
B.系统分析的主要任务
C.系统分析的前提
D.系统分析的条件
参考答案:B
下列因素中,与支气管哮喘发作关系最为密切的是:()
A.交感神经在支气管中分布少
B.肾上腺素能β受体功能低下
C.三磷酸腺苷增多
D.环磷酸腺苷增多
E.迷走神经兴奋
Transformational generative linguists believe that every normal human being was born with an LAD. Here LAD is the short form of ______.
A. learner's acquisition device B. language acquisition deviceC. linguistic acting discussion D. long-term acquiring details