【简答题】熔断器在控制电路中起( )作用。 A.过载保护 B.开路保护 C.短路保护 D.失压保护
【简答题】在接触器自锁正转控制电路中,熔断器的起 保护;热继电器起 保护作用。接触器起 和 保护作用。
【单选题】熔断器在低压电路及电动机控制线路中起( )作用。
【简答题】熔断器在电路中起()保护作用。熔断器在电气控制图中的文字符号是()。
【判断题】四1 改变地点带来的效益利润,比如海南岛香蕉只卖1元1斤,到了常州卖4元一斤。 这个3元就是用运输改变空间地点创造的效益,即空间效应
【单选题】______I want is peace and quiet.
【单选题】What is the meaning of the sentence "There are times when I want to kill Sarah...but I'd kill for her all the time"?
A.
Sometimes I want to kill Sarah. Sometimes I want to kill others.
B.
I always like to help Sarah although sometimes I have fights with her.
C.
Sometimes I want to kill Sarah. But I want to kill others all the time.
D.
I always hate Sarah. So I want to kill her all the time.
【简答题】你已经上大学了,应该学会独立自主。(now that, learn,independent)