电焊机一次线与电源接点不宜采用插销连接,其长度不得大于()m。
A、3
B、4
C、5
D、6
参考答案:C
I have always been honest and straightforward , and it doesn't matter_______I'm talking to.
A.Who is it
B.who it is
C.it is who
D.it is whom
会计的主要计量单位是()。
A.长度
B.质量
C.时间
D.货币