【简答题】任务型阅读。 请阅读第56-60题的电视节目内容说明和A-E五个节目名称,把它们分别配对。 小题1:When you need help with your homework, go to the library. You may find magazines, newspapers, and big dictionaries there. They can always help you...
【单选题】B. Choose the words or expressions and complete the passage: (6分) ★★ As you become more aware of the specific trees that are beneficial in your area, you should do something to save the trees. ●When y...
【单选题】B. Choose the words or expressions and complete the passage: (6分) ★ What do you, the trees and hamsters have in common? Don’t you know the answer? You all ___59___ water. All living things must have w...
【单选题】下列说法不正确的是( )
A.
从物理意义上来说, KCL 应对电流的实际方向来说才是正确的,但对电流的参考方向来说也必然是正确的。
B.
在节点处各支路电流的方向不能均设为流入节点,否则将只有流入节点的电流而无流出节点的电流。
C.
定律 KCL 、 KVL 和 VCR 是电路分析的基础,它们同时适用于线性电路和非线性电路。
D.
KCL 只与支路电流 有关,而与元件的性质无关。