【单选题】— Mr White has been working all the morning with no rest. — He is a(n) ________ man. He never looks tired.
【单选题】He has ______ black and ______ white cat.
【单选题】图示电路中,以b为参考点,求a,d点的电位: Va、Vd 。
【简答题】句型转换。 1. It's a white box. (改为复数) _________ white _________. 2. He has a short ruler. (改为一般疑问句) _________ he _________ a short ruler? 3. His father is fine . (划线部分提问) _________ _________ his father? 4...
【单选题】图示电路中,以a为参考点,求a,d点的电位: Va、Vd。
【简答题】He has a white blouse. ________(he) blouse is white.
【简答题】图示电路中, 当选择A点为参考点时, 求各点的电位VA=( ),VB=( ),VC=( ).
【单选题】先秦时期,卿、大夫、士等各级贵族所乘的车舆称为
【简答题】图示电路中,求a点的电位Va=[填空(1)] V
【简答题】在题图El一17所示电路中,求A点的电位VA。