假设一个电路,有 n 个结点, b 条支路,在支路电流法中 (1) 共有( )个未知电量; (2) 需 要列写( )个独立的 KCL 方程 (3) 需要列写( )个独立的 KVL 方程。
A.
b, n, b-n
B.
b-n+1, 0, b-n+1
C.
n-1, n-1, 0
D.
b, n-1, b-(n-1)
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【单选题】While the roots of social psychology (lie in) the intellectual soil of the whole Western tradition, (it's) present (flowering) is recognized to be (characteristically) an American phenomenon.
【单选题】While the roots of social psychology lie in the intellectual soil of the whole western tradition, its present flowering is recognized to be characteristically an American phenomenon. One reason for th...
A.
because its roots are intellectually western in origin.
B.
as a direct response to the great depression.
C.
to meet the threat of Adolf Hitler and his policy of mass genocide.
D.
because of its pragmatic traditions for dealing with social problems.