问题
单项选择题
机床进给系统的限流保护,要求电动机堵转时,电枢电流不超过()倍的额定电流。
A.1.1~1.2
B.1.3~1.4
C.1.5~2
D.2.1~2.5
答案
参考答案:C
机床进给系统的限流保护,要求电动机堵转时,电枢电流不超过()倍的额定电流。
A.1.1~1.2
B.1.3~1.4
C.1.5~2
D.2.1~2.5
参考答案:C
Girl: Tell me about it, John? Boy: Well, While I was walking to school I saw a cat 小题2:_______ a tree. It was really scared. Girl: What did you do? Boy: I climbed the tree. Girl: And you got the cat? Boy: No. While I was climbing the trees, a man saw me. It was his tree and he 小题3:________ at me. So I hoped climbing. Girl: What about the cat? Boy: It wanted to 小题4:_________down. But it was too scared. Girl: Then what happened? Boy: Then the man called the police. And while he was calling the police, a woman called the newspaper. Girl: What did you do? Boy: I jumped down 小题5:_______the tree. And then the cat jumped down, 小题6:________. Girl: That’s good. Boy: And then the police officer and the newspaper reporter 小题7:_________. The police officer said, Good boy!” And the newspaper reporter 小题8:________ a photo to put in the newspaper. Girl: That’s great! Boy: Yes, but 小题9:________ he was taking the photo, the cat went 小题10:______ the tree again. Girl: What did you do? Boy: What do you think? |