选择题:2— I must go now. The plane will leave in half an

题目内容:
2— I must go now. The plane will leave in half an hour. Thank you for seeing me off.
—____________ ( )(本题5.0分)
A、 Good luck.
B、 Be careful.
C、 Best Wishes.
D、 Hurry to catch the plane.
参考答案:

在一个具有n个独立节点的系统中,节点阻抗矩阵的阶数为( )。(本题1.5分)A. n×n阶B. (n

在一个具有n个独立节点的系统中,节点阻抗矩阵的阶数为( )。(本题1.5分)A. n×n阶B. (n-1)×(n-1)阶C. (n+1)×(n+1)阶D. (n

查看答案