皮皮学，免费搜题
登录
搜题
【简答题】
已知电阻R=440Ω，将其接在电压U=220V、频率f=50Hz的交流电路上，试求电流I和功率P。如将电源的频率改为100Hz，试问此时电流变不变?
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】The combination of each of the following factors allows some individuals to perform at higher levels than others EXCEPT:
A.
Declarative knowledge
B.
Biases
C.
Procedural knowledge
D.
Motivation
【单选题】When individuals gain knowledge of the most efficient ways to perform particular tasks, they are saving costs through:
A.
location economies.
B.
value creation effects.
C.
experience curve effects.
D.
learning effects.
【判断题】According to team leadership theory, individuals other than the formal leader can perform the critical leadership functions.
A.
正确
B.
错误
【判断题】Individuals perform only one role in the buying center, but there can be more than one individual involved in any particular role.
A.
正确
B.
错误
【判断题】Aptitudes are natural talents that help individuals learn specific tasks more quickly and perform them better than other people.
A.
正确
B.
错误
【简答题】The preparation of a design requires many individuals who must perform design calculations, coordinate related work, and produce many sheets of drawings that have _______(主面图), sections, details, and ...
【单选题】The explicit goal of( )is to identify and hire individuals who have the knowledge, skills, and abilities to perform the jobs within the organization successfully.
A.
selection
B.
evaluation
C.
competition
D.
audition
相关题目：
参考解析：
知识点：
题目纠错 0
发布
