低合金钢通常在()或()状态下使用,成形后不再进行淬火,调质等处理。
参考答案:退火;正火
腰间盘突出症与椎管内肿瘤最有鉴别意义的辅助检查方法是
A.肌电图
B.超声波
C.CT
D.X线片
E.MRI
The processor manipulates data stored in main memory under the control of a (71) stored in main memory.
A.command
B.program
C.operation
D.code