长度与直径的比值大于10的轴称为细长轴。
参考答案:对
Mike wasn't at home yesterday. He to help with Jenny's English. [ ]
A. was asking
B. is asked
C. is asking
D. was asked
下列符合发票管理规定的是()。
A、增值税专用发票由国务院税务主管部门指定的企业印制
B、普通发票可以到任意印刷企业印制
C、普通发票由县级国家税务局、地方税务局指定企业印制
D、账簿、记账凭证、完税凭证及其他有关资料不得伪造、变造或者擅自损毁