【单选题】下列关于直流电机的电动势的表达式正确的是______。(其中,CE--电机结构常数;Ia--电枢电流;T--电机电磁转矩;Φ--电机主磁极磁通;n--电机转速)
【单选题】______, he couldn’t get the door open.
【单选题】We don't know what the surface of Venus might ______.
【单选题】“I her a long time ago,” he doubted, “She doesn’t look at all familiar.”
【单选题】对于直流电动机,下列表达式正确的是()。
【单选题】下列关于直流电机的电动势的表达式正确的是()。(其中,KE--电机结构常数;Ia--电枢电流;T--电机电磁转矩;Φ--电机主磁极磁通;n--电机转速)
【单选题】_______ he’d come to the door, he thought he might as well go in with the others to have a look.
【单选题】If he had worked hard____.
A.
he might have passed the final exam
B.
he might pass the final exam
C.
he has passed the final exam
D.
he passed the final exam
【简答题】A.He might get his passport. B.He might get some money and clothes. C.He might make himself armed. D.He might make a call.