直流侧短路时其灭磁开关和快速熔断器分断能力应满足要求。
参考答案:对
常用来测量车架和车身尺寸的是哪种工具()
A.铅锤;
B.指针测量计;
C.千分尺;
D.机工尺。
A:Are your books in the bookcase?
B: . They’re on the desk.
A.No, it isn’t
B.Yes, it is
C.Yes, they are
D.No, they aren’t