国家规定革命烈士一次性抚恤金的标准为()。
A. 10个月工资
B. 20个月工资
C. 30个月工资
D. 40个月工资
It is important for the teacher to show students how easy it is to understand something from authentic materials rather than how difficult it is to understand everything.()
A. 正确
B. 错误
若采用8位A/D转换器转换0~10V的电压信号,则分辨率约为()。
A. 5mv
B. 10mv
C. 20mv
D. 40mv
钻孔机在将镜片钻通的瞬间用力不要过大,防止()。
A. 镜片破裂
B. 镜片划痕
C. 绞刀损坏
D. 绞刀断裂